The direct continuation of the brachial trunk, originating at the bifurcation of the brachial artery opposite the neck of the radius. Its branches may be divided into three groups corresponding to the three regions in which the vessel is situated, the forearm, wrist, and hand.
Either of the two principal arteries on both sides of the neck that supply blood to the head and neck; each divides into two branches, the internal carotid artery and the external carotid artery.
Pathological conditions involving the CAROTID ARTERIES, including the common, internal, and external carotid arteries. ATHEROSCLEROSIS and TRAUMA are relatively frequent causes of carotid artery pathology.
Branch of the common carotid artery which supplies the anterior part of the brain, the eye and its appendages, the forehead and nose.
The two principal arteries supplying the structures of the head and neck. They ascend in the neck, one on each side, and at the level of the upper border of the thyroid cartilage, each divides into two branches, the external (CAROTID ARTERY, EXTERNAL) and internal (CAROTID ARTERY, INTERNAL) carotid arteries.
Narrowing or stricture of any part of the CAROTID ARTERIES, most often due to atherosclerotic plaque formation. Ulcerations may form in atherosclerotic plaques and induce THROMBUS formation. Platelet or cholesterol emboli may arise from stenotic carotid lesions and induce a TRANSIENT ISCHEMIC ATTACK; CEREBROVASCULAR ACCIDENT; or temporary blindness (AMAUROSIS FUGAX). (From Adams et al., Principles of Neurology, 6th ed, pp 822-3)
Branch of the common carotid artery which supplies the exterior of the head, the face, and the greater part of the neck.
The excision of the thickened, atheromatous tunica intima of a carotid artery.
Blood clot formation in any part of the CAROTID ARTERIES. This may produce CAROTID STENOSIS or occlusion of the vessel, leading to TRANSIENT ISCHEMIC ATTACK; CEREBRAL INFARCTION; or AMAUROSIS FUGAX.
The vessels carrying blood away from the heart.
The splitting of the vessel wall in one or both (left and right) internal carotid arteries (CAROTID ARTERY, INTERNAL). Interstitial hemorrhage into the media of the vessel wall can lead to occlusion of the internal carotid artery and aneurysm formation.
A small cluster of chemoreceptive and supporting cells located near the bifurcation of the internal carotid artery. The carotid body, which is richly supplied with fenestrated capillaries, senses the pH, carbon dioxide, and oxygen concentrations in the blood and plays a crucial role in their homeostatic control.
The innermost layer of an artery or vein, made up of one layer of endothelial cells and supported by an internal elastic lamina.
The dilated portion of the common carotid artery at its bifurcation into external and internal carotids. It contains baroreceptors which, when stimulated, cause slowing of the heart, vasodilatation, and a fall in blood pressure.
The arterial blood vessels supplying the CEREBRUM.
The middle layer of blood vessel walls, composed principally of thin, cylindrical, smooth muscle cells and elastic tissue. It accounts for the bulk of the wall of most arteries. The smooth muscle cells are arranged in circular layers around the vessel, and the thickness of the coat varies with the size of the vessel.
The short wide vessel arising from the conus arteriosus of the right ventricle and conveying unaerated blood to the lungs.
Radiography of the vascular system of the brain after injection of a contrast medium.
The main artery of the thigh, a continuation of the external iliac artery.
Devices that provide support for tubular structures that are being anastomosed or for body cavities during skin grafting.
A measurement of the thickness of the carotid artery walls. It is measured by B-mode ULTRASONOGRAPHY and is used as a surrogate marker for ATHEROSCLEROSIS.
The first branch of the SUBCLAVIAN ARTERY with distribution to muscles of the NECK; VERTEBRAE; SPINAL CORD; CEREBELLUM; and interior of the CEREBRUM.
Damages to the CAROTID ARTERIES caused either by blunt force or penetrating trauma, such as CRANIOCEREBRAL TRAUMA; THORACIC INJURIES; and NECK INJURIES. Damaged carotid arteries can lead to CAROTID ARTERY THROMBOSIS; CAROTID-CAVERNOUS SINUS FISTULA; pseudoaneurysm formation; and INTERNAL CAROTID ARTERY DISSECTION. (From Am J Forensic Med Pathol 1997, 18:251; J Trauma 1994, 37:473)
Ultrasonography applying the Doppler effect combined with real-time imaging. The real-time image is created by rapid movement of the ultrasound beam. A powerful advantage of this technique is the ability to estimate the velocity of flow from the Doppler shift frequency.
The artery formed by the union of the right and left vertebral arteries; it runs from the lower to the upper border of the pons, where it bifurcates into the two posterior cerebral arteries.
Pathological processes which result in the partial or complete obstruction of ARTERIES. They are characterized by greatly reduced or absence of blood flow through these vessels. They are also known as arterial insufficiency.
A branch of the abdominal aorta which supplies the kidneys, adrenal glands and ureters.
Arteries which arise from the abdominal aorta and distribute to most of the intestines.
Brief reversible episodes of focal, nonconvulsive ischemic dysfunction of the brain having a duration of less than 24 hours, and usually less than one hour, caused by transient thrombotic or embolic blood vessel occlusion or stenosis. Events may be classified by arterial distribution, temporal pattern, or etiology (e.g., embolic vs. thrombotic). (From Adams et al., Principles of Neurology, 6th ed, pp814-6)
Non-invasive method of vascular imaging and determination of internal anatomy without injection of contrast media or radiation exposure. The technique is used especially in CEREBRAL ANGIOGRAPHY as well as for studies of other vascular structures.
Use of a balloon catheter for dilation of an occluded artery. It is used in treatment of arterial occlusive diseases, including renal artery stenosis and arterial occlusions in the leg. For the specific technique of BALLOON DILATION in coronary arteries, ANGIOPLASTY, BALLOON, CORONARY is available.
Radiography of blood vessels after injection of a contrast medium.
A method of delineating blood vessels by subtracting a tissue background image from an image of tissue plus intravascular contrast material that attenuates the X-ray photons. The background image is determined from a digitized image taken a few moments before injection of the contrast material. The resulting angiogram is a high-contrast image of the vessel. This subtraction technique allows extraction of a high-intensity signal from the superimposed background information. The image is thus the result of the differential absorption of X-rays by different tissues.
Thickening and loss of elasticity of the walls of ARTERIES of all sizes. There are many forms classified by the types of lesions and arteries involved, such as ATHEROSCLEROSIS with fatty lesions in the ARTERIAL INTIMA of medium and large muscular arteries.
Artery arising from the brachiocephalic trunk on the right side and from the arch of the aorta on the left side. It distributes to the neck, thoracic wall, spinal cord, brain, meninges, and upper limb.
Surgical excision, performed under general anesthesia, of the atheromatous tunica intima of an artery. When reconstruction of an artery is performed as an endovascular procedure through a catheter, it is called ATHERECTOMY.
The circulation of blood through the BLOOD VESSELS of the BRAIN.
Reconstruction or repair of a blood vessel, which includes the widening of a pathological narrowing of an artery or vein by the removal of atheromatous plaque material and/or the endothelial lining as well, or by dilatation (BALLOON ANGIOPLASTY) to compress an ATHEROMA. Except for ENDARTERECTOMY, usually these procedures are performed via catheterization as minimally invasive ENDOVASCULAR PROCEDURES.
Surgical therapy of ischemic coronary artery disease achieved by grafting a section of saphenous vein, internal mammary artery, or other substitute between the aorta and the obstructed coronary artery distal to the obstructive lesion.
Arteries originating from the subclavian or axillary arteries and distributing to the anterior thoracic wall, mediastinal structures, diaphragm, pectoral muscles and mammary gland.
Either of two large arteries originating from the abdominal aorta; they supply blood to the pelvis, abdominal wall and legs.
Tomography using x-ray transmission and a computer algorithm to reconstruct the image.
A group of pathological conditions characterized by sudden, non-convulsive loss of neurological function due to BRAIN ISCHEMIA or INTRACRANIAL HEMORRHAGES. Stroke is classified by the type of tissue NECROSIS, such as the anatomic location, vasculature involved, etiology, age of the affected individual, and hemorrhagic vs. non-hemorrhagic nature. (From Adams et al., Principles of Neurology, 6th ed, pp777-810)
Localized reduction of blood flow to brain tissue due to arterial obstruction or systemic hypoperfusion. This frequently occurs in conjunction with brain hypoxia (HYPOXIA, BRAIN). Prolonged ischemia is associated with BRAIN INFARCTION.
A spectrum of pathological conditions of impaired blood flow in the brain. They can involve vessels (ARTERIES or VEINS) in the CEREBRUM, the CEREBELLUM, and the BRAIN STEM. Major categories include INTRACRANIAL ARTERIOVENOUS MALFORMATIONS; BRAIN ISCHEMIA; CEREBRAL HEMORRHAGE; and others.
Evaluation undertaken to assess the results or consequences of management and procedures used in combating disease in order to determine the efficacy, effectiveness, safety, and practicability of these interventions in individual cases or series.
The nonstriated involuntary muscle tissue of blood vessels.
Use or insertion of a tubular device into a duct, blood vessel, hollow organ, or body cavity for injecting or withdrawing fluids for diagnostic or therapeutic purposes. It differs from INTUBATION in that the tube here is used to restore or maintain patency in obstructions.
Elements of limited time intervals, contributing to particular results or situations.
An aspect of personal behavior or lifestyle, environmental exposure, or inborn or inherited characteristic, which, on the basis of epidemiologic evidence, is known to be associated with a health-related condition considered important to prevent.
The continuation of the axillary artery; it branches into the radial and ulnar arteries.
The largest of the cerebral arteries. It trifurcates into temporal, frontal, and parietal branches supplying blood to most of the parenchyma of these lobes in the CEREBRAL CORTEX. These are the areas involved in motor, sensory, and speech activities.
Artery originating from the internal carotid artery and distributing to the eye, orbit and adjacent facial structures.
Pathological outpouching or sac-like dilatation in the wall of any blood vessel (ARTERIES or VEINS) or the heart (HEART ANEURYSM). It indicates a thin and weakened area in the wall which may later rupture. Aneurysms are classified by location, etiology, or other characteristics.
The visualization of deep structures of the body by recording the reflections or echoes of ultrasonic pulses directed into the tissues. Use of ultrasound for imaging or diagnostic purposes employs frequencies ranging from 1.6 to 10 megahertz.
PRESSURE of the BLOOD on the ARTERIES and other BLOOD VESSELS.
Blocking of a blood vessel in the SKULL by an EMBOLUS which can be a blood clot (THROMBUS) or other undissolved material in the blood stream. Most emboli are of cardiac origin and are associated with HEART DISEASES. Other non-cardiac sources of emboli are usually associated with VASCULAR DISEASES.
A value equal to the total volume flow divided by the cross-sectional area of the vascular bed.
Ultrasonography applying the Doppler effect, with the superposition of flow information as colors on a gray scale in a real-time image. This type of ultrasonography is well-suited to identifying the location of high-velocity flow (such as in a stenosis) or of mapping the extent of flow in a certain region.
Observation of a population for a sufficient number of persons over a sufficient number of years to generate incidence or mortality rates subsequent to the selection of the study group.
Abnormal outpouching in the wall of intracranial blood vessels. Most common are the saccular (berry) aneurysms located at branch points in CIRCLE OF WILLIS at the base of the brain. Vessel rupture results in SUBARACHNOID HEMORRHAGE or INTRACRANIAL HEMORRHAGES. Giant aneurysms (>2.5 cm in diameter) may compress adjacent structures, including the OCULOMOTOR NERVE. (From Adams et al., Principles of Neurology, 6th ed, p841)
A polygonal anastomosis at the base of the brain formed by the internal carotid (CAROTID ARTERY, INTERNAL), proximal parts of the anterior, middle, and posterior cerebral arteries (ANTERIOR CEREBRAL ARTERY; MIDDLE CEREBRAL ARTERY; POSTERIOR CEREBRAL ARTERY), the anterior communicating artery and the posterior communicating arteries.
Vascular diseases characterized by thickening and hardening of the walls of ARTERIES inside the SKULL. There are three subtypes: (1) atherosclerosis with fatty deposits in the ARTERIAL INTIMA; (2) Monckeberg's sclerosis with calcium deposits in the media and (3) arteriolosclerosis involving the small caliber arteries. Clinical signs include HEADACHE; CONFUSION; transient blindness (AMAUROSIS FUGAX); speech impairment; and HEMIPARESIS.
A thickening and loss of elasticity of the walls of ARTERIES that occurs with formation of ATHEROSCLEROTIC PLAQUES within the ARTERIAL INTIMA.
A non-invasive technique using ultrasound for the measurement of cerebrovascular hemodynamics, particularly cerebral blood flow velocity and cerebral collateral flow. With a high-intensity, low-frequency pulse probe, the intracranial arteries may be studied transtemporally, transorbitally, or from below the foramen magnum.
The formation of an area of NECROSIS in the CEREBRUM caused by an insufficiency of arterial or venous blood flow. Infarcts of the cerebrum are generally classified by hemisphere (i.e., left vs. right), lobe (e.g., frontal lobe infarction), arterial distribution (e.g., INFARCTION, ANTERIOR CEREBRAL ARTERY), and etiology (e.g., embolic infarction).
The flow of BLOOD through or around an organ or region of the body.
Microsurgical revascularization to improve intracranial circulation. It usually involves joining the extracranial circulation to the intracranial circulation but may include extracranial revascularization (e.g., subclavian-vertebral artery bypass, subclavian-external carotid artery bypass). It is performed by joining two arteries (direct anastomosis or use of graft) or by free autologous transplantation of highly vascularized tissue to the surface of the brain.
Studies in which individuals or populations are followed to assess the outcome of exposures, procedures, or effects of a characteristic, e.g., occurrence of disease.
Arteries arising from the external carotid or the maxillary artery and distributing to the temporal region.
The veins and arteries of the HEART.
Embolism or thrombosis involving blood vessels which supply intracranial structures. Emboli may originate from extracranial or intracranial sources. Thrombosis may occur in arterial or venous structures.
Single pavement layer of cells which line the luminal surface of the entire vascular system and regulate the transport of macromolecules and blood components.
Benign paraganglioma at the bifurcation of the COMMON CAROTID ARTERIES. It can encroach on the parapharyngeal space and produce dysphagia, pain, and cranial nerve palsies.
Transient complete or partial monocular blindness due to retinal ischemia. This may be caused by emboli from the CAROTID ARTERY (usually in association with CAROTID STENOSIS) and other locations that enter the central RETINAL ARTERY. (From Adams et al., Principles of Neurology, 6th ed, p245)
Veins in the neck which drain the brain, face, and neck into the brachiocephalic or subclavian veins.
The physiological widening of BLOOD VESSELS by relaxing the underlying VASCULAR SMOOTH MUSCLE.
Application of a ligature to tie a vessel or strangulate a part.
An irregularly shaped venous space in the dura mater at either side of the sphenoid bone.
A method of hemostasis utilizing various agents such as Gelfoam, silastic, metal, glass, or plastic pellets, autologous clot, fat, and muscle as emboli. It has been used in the treatment of spinal cord and INTRACRANIAL ARTERIOVENOUS MALFORMATIONS, renal arteriovenous fistulas, gastrointestinal bleeding, epistaxis, hypersplenism, certain highly vascular tumors, traumatic rupture of blood vessels, and control of operative hemorrhage.
Ultrasonography applying the Doppler effect, with frequency-shifted ultrasound reflections produced by moving targets (usually red blood cells) in the bloodstream along the ultrasound axis in direct proportion to the velocity of movement of the targets, to determine both direction and velocity of blood flow. (Stedman, 25th ed)
The largest branch of the celiac trunk with distribution to the spleen, pancreas, stomach and greater omentum.
Studies used to test etiologic hypotheses in which inferences about an exposure to putative causal factors are derived from data relating to characteristics of persons under study or to events or experiences in their past. The essential feature is that some of the persons under study have the disease or outcome of interest and their characteristics are compared with those of unaffected persons.
Sudden ISCHEMIA in the RETINA due to blocked blood flow through the CENTRAL RETINAL ARTERY or its branches leading to sudden complete or partial loss of vision, respectively, in the eye.
The condition of an anatomical structure's being constricted beyond normal dimensions.
In screening and diagnostic tests, the probability that a person with a positive test is a true positive (i.e., has the disease), is referred to as the predictive value of a positive test; whereas, the predictive value of a negative test is the probability that the person with a negative test does not have the disease. Predictive value is related to the sensitivity and specificity of the test.
An increase in the number of cells in a tissue or organ without tumor formation. It differs from HYPERTROPHY, which is an increase in bulk without an increase in the number of cells.
Pathologic processes that affect patients after a surgical procedure. They may or may not be related to the disease for which the surgery was done, and they may or may not be direct results of the surgery.
A branch of the celiac artery that distributes to the stomach, pancreas, duodenum, liver, gallbladder, and greater omentum.
The movement and the forces involved in the movement of the blood through the CARDIOVASCULAR SYSTEM.
The arterial trunk that arises from the abdominal aorta and after a short course divides into the left gastric, common hepatic and splenic arteries.
Arteries originating from the subclavian or axillary arteries and distributing to the anterior thoracic wall, mediastinal structures, diaphragm, pectoral muscles, mammary gland and the axillary aspect of the chest wall.
The species Oryctolagus cuniculus, in the family Leporidae, order LAGOMORPHA. Rabbits are born in burrows, furless, and with eyes and ears closed. In contrast with HARES, rabbits have 22 chromosome pairs.
The physiological narrowing of BLOOD VESSELS by contraction of the VASCULAR SMOOTH MUSCLE.
Levels within a diagnostic group which are established by various measurement criteria applied to the seriousness of a patient's disorder.
The statistical reproducibility of measurements (often in a clinical context), including the testing of instrumentation or techniques to obtain reproducible results. The concept includes reproducibility of physiological measurements, which may be used to develop rules to assess probability or prognosis, or response to a stimulus; reproducibility of occurrence of a condition; and reproducibility of experimental results.
Lesions formed within the walls of ARTERIES.
Pathologic deposition of calcium salts in tissues.
Binary classification measures to assess test results. Sensitivity or recall rate is the proportion of true positives. Specificity is the probability of correctly determining the absence of a condition. (From Last, Dictionary of Epidemiology, 2d ed)
Use of a balloon CATHETER to block the flow of blood through an artery or vein.
A large vessel supplying the whole length of the small intestine except the superior part of the duodenum. It also supplies the cecum and the ascending part of the colon and about half the transverse part of the colon. It arises from the anterior surface of the aorta below the celiac artery at the level of the first lumbar vertebra.
Specialized arterial vessels in the umbilical cord. They carry waste and deoxygenated blood from the FETUS to the mother via the PLACENTA. In humans, there are usually two umbilical arteries but sometimes one.
Non-invasive method of demonstrating internal anatomy based on the principle that atomic nuclei in a strong magnetic field absorb pulses of radiofrequency energy and emit them as radiowaves which can be reconstructed into computerized images. The concept includes proton spin tomographic techniques.
Naturally occurring or experimentally induced animal diseases with pathological processes sufficiently similar to those of human diseases. They are used as study models for human diseases.
Not an aneurysm but a well-defined collection of blood and CONNECTIVE TISSUE outside the wall of a blood vessel or the heart. It is the containment of a ruptured blood vessel or heart, such as sealing a rupture of the left ventricle. False aneurysm is formed by organized THROMBUS and HEMATOMA in surrounding tissue.
Surgical insertion of BLOOD VESSEL PROSTHESES to repair injured or diseased blood vessels.
Narrowing or occlusion of the RENAL ARTERY or arteries. It is due usually to ATHEROSCLEROSIS; FIBROMUSCULAR DYSPLASIA; THROMBOSIS; EMBOLISM, or external pressure. The reduced renal perfusion can lead to renovascular hypertension (HYPERTENSION, RENOVASCULAR).
Distensibility measure of a chamber such as the lungs (LUNG COMPLIANCE) or bladder. Compliance is expressed as a change in volume per unit change in pressure.
The qualitative or quantitative estimation of the likelihood of adverse effects that may result from exposure to specified health hazards or from the absence of beneficial influences. (Last, Dictionary of Epidemiology, 1988)
Rhythmic, intermittent propagation of a fluid through a BLOOD VESSEL or piping system, in contrast to constant, smooth propagation, which produces laminar flow.
An idiopathic, segmental, nonatheromatous disease of the musculature of arterial walls, leading to STENOSIS of small and medium-sized arteries. There is true proliferation of SMOOTH MUSCLE CELLS and fibrous tissue. Fibromuscular dysplasia lesions are smooth stenosis and occur most often in the renal and carotid arteries. They may also occur in other peripheral arteries of the extremity.
Delivery of drugs into an artery.
The first and largest artery branching from the aortic arch. It distributes blood to the right side of the head and neck and to the right arm.
The degree to which BLOOD VESSELS are not blocked or obstructed.
NECROSIS occurring in the MIDDLE CEREBRAL ARTERY distribution system which brings blood to the entire lateral aspects of each CEREBRAL HEMISPHERE. Clinical signs include impaired cognition; APHASIA; AGRAPHIA; weak and numbness in the face and arms, contralaterally or bilaterally depending on the infarction.
Drugs used to cause dilation of the blood vessels.
A strain of albino rat used widely for experimental purposes because of its calmness and ease of handling. It was developed by the Sprague-Dawley Animal Company.
The domestic dog, Canis familiaris, comprising about 400 breeds, of the carnivore family CANIDAE. They are worldwide in distribution and live in association with people. (Walker's Mammals of the World, 5th ed, p1065)
Maintenance of blood flow to an organ despite obstruction of a principal vessel. Blood flow is maintained through small vessels.
The portion of the descending aorta proceeding from the arch of the aorta and extending to the DIAPHRAGM, eventually connecting to the ABDOMINAL AORTA.
The return of a sign, symptom, or disease after a remission.
The act of constricting.
Radiography of the vascular system of the heart muscle after injection of a contrast medium.
An imbalance between myocardial functional requirements and the capacity of the CORONARY VESSELS to supply sufficient blood flow. It is a form of MYOCARDIAL ISCHEMIA (insufficient blood supply to the heart muscle) caused by a decreased capacity of the coronary vessels.
A branch of the external carotid artery which distributes to the deep structures of the face (internal maxillary) and to the side of the face and nose (external maxillary).
Resistance and recovery from distortion of shape.
Operative procedures for the treatment of vascular disorders.
The part of CENTRAL NERVOUS SYSTEM that is contained within the skull (CRANIUM). Arising from the NEURAL TUBE, the embryonic brain is comprised of three major parts including PROSENCEPHALON (the forebrain); MESENCEPHALON (the midbrain); and RHOMBENCEPHALON (the hindbrain). The developed brain consists of CEREBRUM; CEREBELLUM; and other structures in the BRAIN STEM.
Left bronchial arteries arise from the thoracic aorta, the right from the first aortic intercostal or the upper left bronchial artery; they supply the bronchi and the lower trachea.
Persistently high systemic arterial BLOOD PRESSURE. Based on multiple readings (BLOOD PRESSURE DETERMINATION), hypertension is currently defined as when SYSTOLIC PRESSURE is consistently greater than 140 mm Hg or when DIASTOLIC PRESSURE is consistently 90 mm Hg or more.
The continuation of the femoral artery coursing through the popliteal fossa; it divides into the anterior and posterior tibial arteries.
Blocking of a blood vessel by an embolus which can be a blood clot or other undissolved material in the blood stream.
The new and thickened layer of scar tissue that forms on a PROSTHESIS, or as a result of vessel injury especially following ANGIOPLASTY or stent placement.
Device constructed of either synthetic or biological material that is used for the repair of injured or diseased blood vessels.
The tearing or bursting of the weakened wall of the aneurysmal sac, usually heralded by sudden worsening pain. The great danger of a ruptured aneurysm is the large amount of blood spilling into the surrounding tissues and cavities, causing HEMORRHAGIC SHOCK.
Dysfunction of one or more cranial nerves causally related to a traumatic injury. Penetrating and nonpenetrating CRANIOCEREBRAL TRAUMA; NECK INJURIES; and trauma to the facial region are conditions associated with cranial nerve injuries.
A subfamily of the Muridae consisting of several genera including Gerbillus, Rhombomys, Tatera, Meriones, and Psammomys.
The larger of the two terminal branches of the brachial artery, beginning about one centimeter distal to the bend of the elbow. Like the RADIAL ARTERY, its branches may be divided into three groups corresponding to their locations in the forearm, wrist, and hand.
Vascular filters or occlusive devices that provide mechanical protection of the distal end organ from blood clots or EMBOLISM-causing debri dislodged during ENDOVASCULAR PROCEDURES.
Diseases that do not exhibit symptoms.
Cells specialized to detect chemical substances and relay that information centrally in the nervous system. Chemoreceptor cells may monitor external stimuli, as in TASTE and OLFACTION, or internal stimuli, such as the concentrations of OXYGEN and CARBON DIOXIDE in the blood.
A branch arising from the internal iliac artery in females, that supplies blood to the uterus.
Any of various animals that constitute the family Suidae and comprise stout-bodied, short-legged omnivorous mammals with thick skin, usually covered with coarse bristles, a rather long mobile snout, and small tail. Included are the genera Babyrousa, Phacochoerus (wart hogs), and Sus, the latter containing the domestic pig (see SUS SCROFA).
The part of a human or animal body connecting the HEAD to the rest of the body.
Changes in the observed frequency of waves (as sound, light, or radio waves) due to the relative motion of source and observer. The effect was named for the 19th century Austrian physicist Johann Christian Doppler.
A medical specialty concerned with the diagnosis and treatment of diseases of the internal organ systems of adults.
A syndrome associated with defective sympathetic innervation to one side of the face, including the eye. Clinical features include MIOSIS; mild BLEPHAROPTOSIS; and hemifacial ANHIDROSIS (decreased sweating)(see HYPOHIDROSIS). Lesions of the BRAIN STEM; cervical SPINAL CORD; first thoracic nerve root; apex of the LUNG; CAROTID ARTERY; CAVERNOUS SINUS; and apex of the ORBIT may cause this condition. (From Miller et al., Clinical Neuro-Ophthalmology, 4th ed, pp500-11)
The main trunk of the systemic arteries.
Act of listening for sounds within the body.
Arteries which supply the dura mater.
Drugs used to cause constriction of the blood vessels.
Formation and development of a thrombus or blood clot in the blood vessel.
The continuation of the subclavian artery; it distributes over the upper limb, axilla, chest and shoulder.
Pathological conditions of intracranial ARTERIES supplying the CEREBRUM. These diseases often are due to abnormalities or pathological processes in the ANTERIOR CEREBRAL ARTERY; MIDDLE CEREBRAL ARTERY; and POSTERIOR CEREBRAL ARTERY.
A purely physical condition which exists within any material because of strain or deformation by external forces or by non-uniform thermal expansion; expressed quantitatively in units of force per unit area.
General or unspecified injuries to the neck. It includes injuries to the skin, muscles, and other soft tissues of the neck.
A strain of albino rat developed at the Wistar Institute that has spread widely at other institutions. This has markedly diluted the original strain.
A technique of inputting two-dimensional images into a computer and then enhancing or analyzing the imagery into a form that is more useful to the human observer.
Receptors in the vascular system, particularly the aorta and carotid sinus, which are sensitive to stretch of the vessel walls.
Localized or diffuse reduction in blood flow through the vertebrobasilar arterial system, which supplies the BRAIN STEM; CEREBELLUM; OCCIPITAL LOBE; medial TEMPORAL LOBE; and THALAMUS. Characteristic clinical features include SYNCOPE; lightheadedness; visual disturbances; and VERTIGO. BRAIN STEM INFARCTIONS or other BRAIN INFARCTION may be associated.
Aneurysm caused by a tear in the TUNICA INTIMA of a blood vessel leading to interstitial HEMORRHAGE, and splitting (dissecting) of the vessel wall, often involving the AORTA. Dissection between the intima and media causes luminal occlusion. Dissection at the media, or between the media and the outer adventitia causes aneurismal dilation.
A neurotransmitter found at neuromuscular junctions, autonomic ganglia, parasympathetic effector junctions, a subset of sympathetic effector junctions, and at many sites in the central nervous system.
Complications that affect patients during surgery. They may or may not be associated with the disease for which the surgery is done, or within the same surgical procedure.
A noninflammatory, progressive occlusion of the intracranial CAROTID ARTERIES and the formation of netlike collateral arteries arising from the CIRCLE OF WILLIS. Cerebral angiogram shows the puff-of-smoke (moyamoya) collaterals at the base of the brain. It is characterized by endothelial HYPERPLASIA and FIBROSIS with thickening of arterial walls. This disease primarily affects children but can also occur in adults.
Theoretical representations that simulate the behavior or activity of the cardiovascular system, processes, or phenomena; includes the use of mathematical equations, computers and other electronic equipment.
The failure by the observer to measure or identify a phenomenon accurately, which results in an error. Sources for this may be due to the observer's missing an abnormality, or to faulty technique resulting in incorrect test measurement, or to misinterpretation of the data. Two varieties are inter-observer variation (the amount observers vary from one another when reporting on the same material) and intra-observer variation (the amount one observer varies between observations when reporting more than once on the same material).
Tear or break of an organ, vessel or other soft part of the body, occurring in the absence of external force.
Homopolymer of tetrafluoroethylene. Nonflammable, tough, inert plastic tubing or sheeting; used to line vessels, insulate, protect or lubricate apparatus; also as filter, coating for surgical implants or as prosthetic material. Synonyms: Fluoroflex; Fluoroplast; Ftoroplast; Halon; Polyfene; PTFE; Tetron.
The process of generating three-dimensional images by electronic, photographic, or other methods. For example, three-dimensional images can be generated by assembling multiple tomographic images with the aid of a computer, while photographic 3-D images (HOLOGRAPHY) can be made by exposing film to the interference pattern created when two laser light sources shine on an object.
Direct myocardial revascularization in which the internal mammary artery is anastomosed to the right coronary artery, circumflex artery, or anterior descending coronary artery. The internal mammary artery is the most frequent choice, especially for a single graft, for coronary artery bypass surgery.

Variations in acute multifocal histoplasmic choroiditis in the primate. (1/1701)

Experimental histoplasmic choroiditis was produced in primates by intracarotid injections of living H. capsulatum organisms. The severity of the choroiditis varied with inoculum size, as well as with site of injection (common carotid vs. internal carotid artery). A reproducible model of histoplasmic choroiditis in primates was produced with an internal carotid injection of 5,000 to 10,000 organisms/lb. The clinical and histopathological course of this acute choroiditis over the first 30 days is presented.  (+info)

A new sign of occlusion of the origin of the internal carotid artery. (2/1701)

When the origin of the internal carotid artery is occluded, the transmission of cardiac sounds along the carotid stops at the site of the occlusion. This is a new neurovascular sign which is being reported.  (+info)

EEG surveillance as a means of extending operability in high risk carotid endarterectomy. (3/1701)

Some patients who have transient ischemic attacks are denied operation because severe occlusive lesions in other extra-cranial arteries may be inappropriately interpreted as constituting an unacceptable surgical risk, or because the lesion is so distal as to make its removal hazardous. Failure of endarterectomy is usually due to incomplete removal of the lesion or to thrombosis upon the frayed intima. Such lesions require excellent visualization and meticulous surgical technique -- not always possible with a shunt. Among 130 consecutive carotid endarterectomies performed under general anesthesia, EEG changes consistent with cerebral ischemia appeared in only nine (7%). These patients required a shunt. In 11 patients normal EEG tracings were obtained during endarterectomy despite contralateral carotid occlusion. None of these patients had a neurological deficit. Continuous EEG monitoring is a reliable method of detecting changes in cerebral perfusion, permits a more meticulous endarterectomy in high-lying lesions without a shunt, and extends operability in high risk patients. Angiographical findings may be an unreliable predictor concerning risk of endarterectomy.  (+info)

Ophthalmodynamometry in internal carotid artery occlusion. (4/1701)

Retinal artery pressure was measured by ophthalmodynamometry in 15 patients with occlusion of the internal carotid artery in its extracranial part. Nine of the patients had severe neurological deficit whereas the remaining six had slight or intermittent symptoms. Retinal artery pressure was reduced on the side of the internal carotid artery occlusion in all patients studied. Near-zero low diastolic retinal artery pressure on the affected side was a common finding among patients with severe deficit and was also seen in some patients with slight deficit. Its presence strongly suggests occlusion of the ipsilateral internal carotid artery.  (+info)

Effect of intracarotid prostaglandin E1 on regional cerebral blood flow in man. (5/1701)

The effect of prostaglandin E1 on regional cerebral blood flow (rCBF) was studied with the intra-arterial 133Xe method in ten awake patients under local anesthesia. Measurements were taken from 16 areas of a hemisphere in seven patients, from 35 areas of a hemisphere in two patients and from 256 areas of a hemisphere in one patient. The prostaglandin was dissolved from the crystalline state without the aid of alcohol. It was given intracarotidly as a constant infusion at a rate of 5 ng per kilogram per minute for five minutes before the measurement and continued during the measurement. In every patient a mild increase in blood flow during the prostaglandin infusion was seen. The flow increase took place in all parts of the hemisphere. It averaged 11.2% (p less than 0.01). During the infusion, the skin supplied by the internal carotid artery and the conjunctiva on the infused side became red and sometimes swollen. A slight pressure was noted by most patients, but none had pain. No side effects of the infusion were noted.  (+info)

Carotid endarterectomy and intracranial thrombolysis: simultaneous and staged procedures in ischemic stroke. (6/1701)

PURPOSE: The feasibility and safety of combining carotid surgery and thrombolysis for occlusions of the internal carotid artery (ICA) and the middle cerebral artery (MCA), either as a simultaneous or as a staged procedure in acute ischemic strokes, was studied. METHODS: A nonrandomized clinical pilot study, which included patients who had severe hemispheric carotid-related ischemic strokes and acute occlusions of the MCA, was performed between January 1994 and January 1998. Exclusion criteria were cerebral coma and major infarction established by means of cerebral computed tomography scan. Clinical outcome was assessed with the modified Rankin scale. RESULTS: Carotid reconstruction and thrombolysis was performed in 14 of 845 patients (1.7%). The ICA was occluded in 11 patients; occlusions of the MCA (mainstem/major branches/distal branch) or the anterior cerebral artery (ACA) were found in 14 patients. In three of the 14 patients, thrombolysis was performed first, followed by carotid enarterectomy (CEA) after clinical improvement (6 to 21 days). In 11 of 14 patients, 0.15 to 1 mIU urokinase was administered intraoperatively, ie, emergency CEA for acute ischemic stroke (n = 5) or surgical reexploration after elective CEA complicated by perioperative intracerebral embolism (n = 6). Thirteen of 14 intracranial embolic occlusions and 10 of 11 ICA occlusions were recanalized successfully (confirmed with angiography or transcranial Doppler studies). Four patients recovered completely (Rankin 0), six patients sustained a minor stroke (Rankin 2/3), two patients had a major stroke (Rankin 4/5), and two patients died. In one patient, hemorrhagic transformation of an ischemic infarction was detectable postoperatively. CONCLUSION: Combining carotid surgery with thrombolysis (simultaneous or staged procedure) offers a new therapeutic approach in the emergency management of an acute carotid-related stroke. Its efficacy should be evaluated in interdisciplinary studies.  (+info)

Lumen reduction measurements of the internal carotid artery before and after Levovist enhancement: reproducibility and agreement with angiography. (7/1701)

Our aim was to assess reproducibility of three different lumen reduction measuring methods--North American Symptomatic Carotid Endarterectomy Trial, European Carotid Surgery Trial, and common carotid--using power Doppler and color Doppler sonography before and after Levovist enhancement. We included 20 symptomatic patients with mild or severe carotid disease. North American Symptomatic Carotid Endarterectomy Trial, European Carotid Surgery Trial, and common carotid measurements on longitudinal views and European Carotid Surgery Trial measurements on transverse views were performed. Examinations were repeated and the results compared to assess reproducibility of measurements. Correlation with angiography was obtained by calculating Pearson correlation coefficients. Reproducibility was significantly better (P < 0.05) for European Carotid Surgery Trial and common carotid measurements (95% limits of agreement between -10% to 10% and -19% to 17%) as compared to North American Symptomatic Carotid Endarterectomy Trial measurements (95% limits of agreement between -11% to 21% and -21% to 23%). Variability of measurements after enhancement increased slightly (not significant) for both power and color Doppler sonography. Additionally, European Carotid Surgery Trial measurements, using nonenhanced power Doppler or color Doppler sonography, did not correlate significantly with angiography, whereas North American Symptomatic Carotid Endarterectomy Trial and common carotid measurements correlated well with angiography, particularly in power Doppler mode after enhancement (r = 0.88 and r = 0.82, respectively). We conclude that for lumen reduction measurements of the internal carotid artery with power and color Doppler sonography, the common carotid method is the only method that is reproducible and has good correlation with angiography, which slightly improves after Levovist enhancement.  (+info)

A policy of quality control assessment helps to reduce the risk of intraoperative stroke during carotid endarterectomy. (8/1701)

OBJECTIVES: A pilot study in our unit suggested that a combination of transcranial Doppler (TCD) plus completion angioscopy reduced incidence of intra-operative stroke (i.e. patients recovering from anaesthesia with a new deficit) during carotid endarterectomy (CEA). The aim of the current study was to see whether routine implementation of this policy was both feasible and associated with a continued reduction in the rate of intraoperative stroke (IOS). MATERIALS AND METHODS: Prospective study in 252 consecutive patients undergoing carotid endarterectomy between March 1995 and December 1996. RESULTS: Continuous TCD monitoring was possible in 229 patients (91%), while 238 patients (94%) underwent angioscopic examination. Overall, angioscopy identified an intimal flap requiring correction in six patients (2.5%), whilst intraluminal thrombus was removed in a further six patients (2.5%). No patient in this series recovered from anaesthesia with an IOS, but the rate of postoperative stroke was 2.8%. CONCLUSIONS: Our policy of TCD plus angioscopy has continued to contribute towards a sustained reduction in the risk of IOS following CEA, but requires access to reliable equipment and technical support. However, a policy of intraoperative quality control assessment may not necessarily alter the rate of postoperative stroke.  (+info)

TY - JOUR. T1 - Endarterectomy for asymptomatic high-grade internal carotid artery stenosis-Does age alone really matter?. AU - Assadian, Afshin. AU - Taher, Fadi. AU - Assadian, Ojan. PY - 2016/9/20. Y1 - 2016/9/20. N2 - Background The aim of this retrospective observational study was to assess whether patients ≥ 75 years of age had a significantly inferior 5-year stroke free survival rate compared to patients ,75 years of age after carotid endarterectomy under regional anesthesia. Methods All consecutive patients with asymptomatic high-grade internal carotid artery (ICA) stenosis operated on from January 1997 to December 1999. Of 273 consecutive patients with asymptomatic carotid artery stenosis, follow up was complete for 253 patients. Results Of 253 patients, 152 were younger and 102 older than 75 years at surgery (65 ± 8 years (range 43-74) and 79 ± 4 years (range 75-90); P , 0.001), respectively. Perioperatively, 4 patient developed stoke (1.6%), 2 in each group (1.3% and 1.6%, ...
TY - JOUR. T1 - The use of covered stents for the endovascular treatment of extracranial internal carotid artery stenosis. T2 - A prospective study with a 5-year follow-up. AU - Szólics, Alex. AU - Sztriha, László K.. AU - Szikra, Péter. AU - Sźlics, Mikĺs. AU - Palḱ, András. AU - Vörös, Erika. PY - 2010/7/1. Y1 - 2010/7/1. N2 - Objectives: To evaluate the safety and feasibility of the use of covered stents for the treatment of extracranial carotid artery stenosis caused by highly embologenic plaques, and to study the long-term outcome of patients receiving such covered stents. Methods: Between 2002 and 2007, 46 patients (63% symptomatic, 78.3% male, 67± 8.6 years old) with internal carotid artery stenosis caused by embologenic plaques or restenosis were treated with self-expanding covered stents (Symbiot, Boston Scientific). Pre-dilatation or protecting devices were not used. Post-dilatation was applied in every patient. Each patient was followed long-term. The outcome measures were ...
The internal carotid artery is a major paired artery, one on each side of the head and neck, in human anatomy. They arise from the common carotid arteries where these bifurcate into the internal and external carotid arteries at cervical vertebral level 3 or 4; the internal carotid artery supplies the brain, while the external carotid nourishes other portions of the head, such as face, scalp, skull, and meninges. Terminologia Anatomica in 1998 subdivided the artery into four parts: cervical, petrous, cavernous, and cerebral. However, in clinical settings, the classification system of the internal carotid artery usually follows the 1996 recommendations by Bouthillier, describing seven anatomical segments of the internal carotid artery, each with a corresponding alphanumeric identifier-C1 cervical, C2 petrous, C3 lacerum, C4 cavernous, C5 clinoid, C6 ophthalmic, and C7 communicating. The Bouthillier nomenclature remains in widespread use by neurosurgeons, neuroradiologists and neurologists. ...
[Endarterectomy for cervical internal carotid artery stenosis accompanied with severe aortic valve stenosis--case report].: A 75-year-old man, who had undergone
In this report, a case of anomalous internal carotid artery looping into the orbital apex is presented. The patient was a 41-year-old man with sudden onset headache, suggestive of aneurysmal subarachnoid hemorrhage (SAH). Imaging with CT demonstrated a perimesencephalic distribution of blood. Cerebral angiography confirmed non-aneurysmal, perimesencephalic SAH, but incidentally noted an anomalous left internal carotid artery with a course into the orbital cone. This is the only known example of this anatomic variation. Potential embryological explanations are discussed. ...
The internal carotid plexus (internal carotid plexus) is situated on the lateral side of the internal carotid artery, and in the plexus there occasionally exists a small gangliform swelling, the carotid ganglion, on the under surface of the artery.. Postganglionic sympathetic fibres ascend from the superior cervical ganglion, along the walls of the internal carotid artery, to enter the internal carotid plexus. These fibres then distribute to deep structures, which include the Superior Tarsal Muscle and pupillary dilator muscles.[1] Some of the fibres from the internal carotid plexus converge to form the deep petrosal nerve.[2]. The internal carotid plexus communicates with the trigeminal ganglion, the abducent nerve, and the pterygopalatine ganglion (also named sphenopalatine); it distributes filaments to the wall of the internal carotid artery, and also communicates with the tympanic branch of the glossopharyngeal nerve.. ...
TY - JOUR. T1 - Letter to the Editor re. T2 - carotid stenting through the right brachial approach for left internal carotid artery stenosis and bovine aortic arch configuration. AU - Berko, Netanel S.. AU - Haramati, Linda B.. PY - 2010/1/1. Y1 - 2010/1/1. UR - http://www.scopus.com/inward/record.url?scp=77952094584&partnerID=8YFLogxK. UR - http://www.scopus.com/inward/citedby.url?scp=77952094584&partnerID=8YFLogxK. U2 - 10.1007/s00330-009-1609-x. DO - 10.1007/s00330-009-1609-x. M3 - Letter. C2 - 19816691. AN - SCOPUS:77952094584. VL - 20. SP - 816. EP - 817. JO - European Radiology. JF - European Radiology. SN - 0938-7994. IS - 4. ER - ...
|b||i|Background:|/i||/b| To investigate the correlation between tortuosity of extracranial internal carotid artery (EICA) and intraprocedural complications in patients undergo
TY - JOUR. T1 - Pulsatile tinnitus associated with dehiscent internal carotid artery. T2 - An irremediable condition?. AU - Van Damme, Jean Philippe. AU - Heylen, Géraldine. AU - Gilain, Chantal. AU - Garin, Pierre. PY - 2017/10/1. Y1 - 2017/10/1. N2 - Dehiscent internal carotid artery (ICA) in the middle ear is a rare condition, with conservative treatment primarily recommended. We report the case of a 63-year-old patient referred to the Ear, Nose, and Throat (ENT) ward for unbearable pulsatile tinnitus. Otoscopy revealed a normal right tympanic membrane, with pulsatile tinnitus but without hearing impairment. Based on imaging studies, including computed tomography (CT) and magnetic resonance imaging (MRI) of the temporal bone, as well as Doppler ultrasound of the internal carotid artery and sigmoid sinus, the diagnosis of ICA canal dehiscence into the tympanic cavity was established, thus excluding the diagnosis of aberrant ICA. Following the patients own request, we undertook surgical ...
TY - JOUR. T1 - Results of endovascular treatment of internal carotid artery stenoses with a newly developed balloon protection catheter. AU - Terada, Tomoaki. AU - Tsuura, Mitsuharu. AU - Matsumoto, Hiroyuki. AU - Masuo, Osamu. AU - Yamaga, Hiroo. AU - Tsumoto, Tomoyuki. AU - Itakura, Toru. AU - Sadato, Akiyo. AU - Hashimoto, Nobuo. AU - Cullen, Sean. AU - Higashida, Randall T.. AU - Harrigan, Mark R.. AU - Hopkins, L. Nelson. AU - Rosenwasser, Robert H.. AU - Marks, Michael P.. PY - 2003/9/1. Y1 - 2003/9/1. N2 - OBJECTIVE: A new balloon protection catheter to prevent distal emboli during internal carotid artery percutaneous transluminal angioplasty and stenting was developed, and its efficacy was evaluated in both an experimental model and clinical cases. METHODS: The balloon protection catheter was navigated over a steerable 0.014-inch guidewire to negotiate tight stenoses and sharp bends, which would cause difficulties for the passage of a flow-directed balloon catheter. Percutaneous ...
Details of the image Right middle cerebral artery territory infarct from right internal carotid artery dissection Modality: CT (non-contrast)
This lateral view from an internal carotid artery angiogram demonstrates the origin of the ascending pharyngeal artery from the cervical internal carotid artery, which is an unusual but normal variant of angiographic anatomy. Normally, the ascending pharyngeal artery arising from the proximal external carotid artery. - Stock Image C007/5818
Clinical record. A 33-year-old man presented to an emergency department with acute dysphasia and a dense right hemiparesis. His National Institute Health Stroke Scale score was 12, indicating a moderate severity stroke (score range 0-42, with increasing values indicating increasing severity). His computed tomography (CT) brain scan was normal. A CT angiogram showed a filling defect in the left intracranial internal carotid artery. Intravenous thrombolysis was commenced 2.5 hours after stroke onset and completed during urgent transit to our hospital for endovascular thrombectomy. Combined stent retrieval and suction thrombectomy of the left internal carotid occlusion restored flow 4.5 hours after stroke onset. A small dissection in the left intracranial internal carotid artery was the source of the thrombotic occlusion (Figure). A magnetic resonance imaging scan of the brain showed small scattered infarctions in the left middle cerebral arterial territory.. The patient was later found to have a ...
TY - JOUR. T1 - Advantages of Staged Angioplasty in a Patient with Internal Carotid Artery Pseudo-Occlusion Besides Prevention of Cerebral Hyperperfusion Syndrome. AU - Takahashi, Satoshi. AU - Akiyama, Takenori. AU - Nakahara, Jin. AU - Yoshizaki, Takahito. AU - Suzuki, Norihiro. AU - Yoshida, Kazunari. PY - 2018/1/1. Y1 - 2018/1/1. N2 - Background Staged angioplasty for carotid artery stenosis has been reported to be effective in preventing postoperative cerebral hyperperfusion syndrome (CHS) in patients with severe carotid stenosis; thus, it is also recommended for patients with internal carotid artery (ICA) pseudo-occlusion, the treatment strategy for which is controversial. Case Description This study reports the case of an Asian man in his 50s who had motor aphasia and right-side weakness caused by pseudo-occlusion of the left ICA. After medical treatment, he underwent a staged angioplasty. After the first stage of percutaneous transluminal angioplasty, anterograde blood flow to the left ...
Using positron emission tomography in nine patients with minor strokes, unilateral internal carotid artery occlusion, and good collateral circulation through the anterior portion of the circle of Willis, we analyzed regional cerebral blood flow, cerebral metabolic rate of oxygen, oxygen extraction fraction, and cerebral blood volume. These studies allowed quantification of the regional hemodynamic status, especially in relation to watershed areas. Compared with eight normal controls, the patients had significantly (p less than 0.01) decreased regional cerebral blood flow in the middle cerebral artery territory and the surrounding watershed areas of the occluded hemisphere. The oxygen extraction fraction rose with the distance from the anterior portion of the circle of Willis, attaining the highest value in the superior parietal and posterior temporo-occipital watershed area. A concomitant decrease in the cerebral blood flow/cerebral blood volume ratio suggested reduction in the mean blood flow ...
The experiment was carried out on 100 symptomatic patients with internal carotid artery stenosis that underwent carotid endarterectomy. Every patient had the wall of the carotid artery resected during organ harvesting surgery in order to evaluate some cytokines (TGF-β, VEGF, FGF, TNF-α) and to perform the immunohistochemistry (IHC). An immunoreactive score (IRS) was calculated based on the staining intensity and the number of cells stained. Over a 3-year period, 7 patients died, and 2 patients were lost to follow-up. The study group consisted of 91 patients. The control group comprised 20 young organ donors with confirmed death brain, who had their normal carotid artery sampled. In all healthy donors (control group) with normal carotid arteries the three cytokines (TGF-β, VEGF, TNF-α) were not discovered. The presence of FGF was confirmed in 25% of healthy donors, probably due to an intima fibroblasts activity, responsible for the synthesis of elastin and collagen to the extracellular matrix (ECM).
The cervical segment, or C1, of the internal carotid extends from the carotid bifurcation until it enters the carotid canal in the skull anterior to the jugular foramen. At its origin, the internal carotid artery is somewhat dilated. This part of the artery is known as the carotid sinus or the carotid bulb. The ascending portion of the cervical segment occurs distal to the bulb, when the vessel walls are again parallel. The internal carotid runs perpendicularly upward in the carotid sheath, and enters the skull through the carotid canal. During this part of its course, it lies in front of the transverse processes of the upper three cervical vertebrae. It is relatively superficial at its start, where it is contained in the carotid triangle of the neck, and lies behind and lateral to the external carotid, overlapped by the sternocleidomastoid muscle, and covered by the deep fascia, the platysma, and integument: it then passes beneath the parotid gland, being crossed by the hypoglossal nerve, the ...
Forty consecutive patients undergoing thromboendarterectomy for total internal carotid artery occlusion were studied in an attempt to determine a) whether careful case selection could be expected to reduce future postoperative mortality and morbidity, b) whether the achieved patency rate justified early operation and c) whether patients in whom patency was restored and maintained had a better long-term prognosis. The results show that a group of patients can be selected that will have low postoperative mortality and morbidity. The success rate for restoration of blood flow is high, particularly if the operation is performed soon after occlusion. The long-term prognosis in patients in whom patency of the internal carotid artery is restored and maintained appears to be better than in those with persistent occlusion of the carotid artery. ...
臺大位居世界頂尖大學之列,為永久珍藏及向國際展現本校豐碩的研究成果及學術能量,圖書館整合機構典藏(NTUR)與學術庫(AH)不同功能平台,成為臺大學術典藏NTU scholars。期能整合研究能量、促進交流合作、保存學術產出、推廣研究成果。. To permanently archive and promote researcher profiles and scholarly works, Library integrates the services of NTU Repository with Academic Hub to form NTU Scholars.. ...
Severe internal carotid artery (ICA) stenosis is a common cause of cerebrovascular accident (CVA) in middle-aged patients. Contralateral carotid occlusion (CCO) in patients with severe ICA stenosis is associated with high risk of CVA. Carotid endarterectomy (CEA) is associated with more complications in patients with CCO than those without CCO. In this study, we present the case of a 61-year-old patient who presented with multiple transient ischemic attack and severe ICA stenosis associated with CCO and occlusion of vertebral arteries. The patient was treated successfully with carotid angioplasty and stenting.
Figure 2 Step-by-Step Carotid Artery Stenting. (A) Bilateral visualization using a diagnostic catheter in the right internal carotid artery. During proximal protection with flow blockage (Medtronic Invatec MoMa, Roncadelle, Italy), a standard 0.014-inch coronary wire was inserted in the dissection and could not be advanced further (arrow). A hydrophilic polymeric 0.014-inch wire (Fielder FC, Asahi-Intecc, Aichi, Japan) (arrowhead) over a coronary microcatheter (Finecross, Terumo, Tokyo, Japan) (black arrow) managed to re-enter the true lumen distally (B, C). (D) Wire progression was controlled by performing contralateral injections. Once the wire reached the midcerebral artery (E), the microcatheter was advanced (F), and the position was checked again with gentle injection of contrast medium (G). (H) The hydrophilic wire was exchanged for a standard one with a trapping balloon inside the MoMa catheter. After predilations with 3.5-mm balloons, 2 open-cell stents (Precise 7-40 mm, Cordis, Fremont, ...
Hypoplasia of one or both internal carotid artery (ICA) is a rare congenital developmental abnormality. The early neurological presentation of this disorder is rare because many of these cases remain asymptomatic and go undetected due to the presence of collateral vessels. We describe a newborn that presented with seizures at 27 hours after birth. Extended ischemia of the right hemisfere was observed on computed tomography (CT), while the 3D MIP reconstruction showed hypoplasia of right internal carotid artery. After about 3 weeks, the rapid improvement of the newborns cerebral ultrasound and EEG allowed to discontinue corticosteroid and sedative therapy. The infant was discharged after 40 days of life in good clinical condition ...
A complete occlusion of the internal carotid artery (ICA) is an important cause of cerebrovascular disease. A never-symptomatic ICA occlusion has a relatively benign course, whereas symptomatic occlusion increases future risk of strokes. Ultrasonography, magnetic resonance imaging and contrast angiography are useful diagnostic tests, and functional imaging of the brain (eg, with positron emission tomography) helps to understand haemodynamic factors involved in the pathophysiology of brain ischaemia. Recently, there has been a resurgence of interest in the role of extracranial-intracranial bypass surgery for the treatment of completely occluded ICA. With advances in the measurement of cerebral haemodynamics, it may be possible to identify high-risk patients who could benefit from the bypass surgery ...
TY - JOUR. T1 - Branches of the petrous and cavernous segments of the internal carotid artery. AU - Tubbs, R. Shane. AU - Hansasuta, Ake. AU - Loukas, Marios. AU - Louis, Robert G.. AU - Mohajel Shoja, Mohammadali. AU - Salter, E. George. AU - Oakes, W. Jerry. PY - 2007/9/13. Y1 - 2007/9/13. N2 - Microsurgical approaches to the skull base require a thorough knowledge of the microvasculature of this region. Interestingly, most standard texts of anatomy do not mention the branches of the internal carotid artery as it travels through the temporal bone and cavernous sinus. Although small and with often conflicting descriptions, these arterial branches may be of significance when contributing to the vascular supply of such pathological entities as meningiomas and vascular malformations. Furthermore, multiple anastomoses exist between these branches and branches of the external carotid artery, thus providing a potentially important collateral circulation between these two systems and thus retrograde ...
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This stock medical exhibit portrays bilateral carotid artery atherosclerosis. In the upper left, a small orientation figure focuses on the arteries of interest. Two larger, anterior cut-away views of both the right and left internal carotid arteries are used to depict the atherosclerosis. The right internal carotid artery is 85% occluded and the left internal carotid artery is completely occluded.
The duplex scan is the main tool used to diagnose carotid artery stenosis, and there is agreement that it might be the single preoperative diagnostic test. All limitations of carotid duplex scanning should be taken into consideration during qualification to surgical or endovascular treatment. Awareness of these limitations is especially important when neurological symptoms are typical and duplex examination is negative. The authors describe the pitfalls of the duplex scan examination in a symptomatic patient with bilateral severe distal internal carotid artery stenosis ...
We present a case of supraclinoid internal carotid artery dissection. Eleven months prior, the patient developed isolated periorbital pain and was diagnosed with giant-cell arteritis with iritis. The patient experienced recurrent spells concerning for transient ischaemic attacks and was transferred to our institution for endovascular intervention after head CT revealed an embolic infarct with a dense middle cerebral artery sign. Digital subtraction angiography was negative for occlusion, instead demonstrating luminal stenosis and poststenotic dilatation. He subsequently experienced acute neurological decline secondary to massive subarachnoid haemorrhage. Non-invasive vascular imaging revealed an intimal flap and a pseudoaneurysm at the site of luminal stenosis, confirming our suspicion for intracranial carotid artery dissection. Given the moribund clinical state, the family opted to withdraw care, and he quickly expired. ...
TY - JOUR. T1 - Correlation of continuous-wave Doppler spectral flow analysis with gross pathology in carotid stenosis. AU - Call, G. K.. AU - Abbott, W. M.. AU - Macdonald, N. R.. AU - Megerman, J.. AU - Davis, K. R.. AU - Heros, Roberto. AU - Kistler, J. P.. PY - 1988/1/1. Y1 - 1988/1/1. N2 - Preoperative continuous-wave Doppler spectral analysis was used to generate two parameters, peak frequency in the internal carotid artery (f(max)) and the ratio of peak frequencies in the internal and common carotid arteries (carotid index). These were compared with direct measurement of residual lumen diameter in pathologic specimens obtained from carotid endarterectomy in 37 patients. Doppler shift frequency parameters were well correlated with residual lumen diameter when the latter was at least 1 mm. Residual lumens of ≤2 mm were found to have an f(max) of ,7.5 kHz and a carotid index of ,3.8. If f(max) was ,14 kHz or the carotid index was ,7, the residual lumen diameter was nearly always ≤1 mm. ...
Background: Eagle syndrome (ES) is a rare symptomatic condition generally caused by an elongated styloid process (SP) or calcification of the stylohyoid complex. On the diagnosis is made, its treatment remains subjective since the indications for surgical intervention are still not standardized. Although styloidectomy is the surgical treatment of choice, no consensus exists regarding the transcervical or/and transoral route. Here, we report our experience in a patient with bilateral internal carotid artery (ICA) dissection caused by ES, who underwent innovative surgical technique. Case Description: A 53-year-old man, with the right-sided middle cerebral artery acute stroke, underwent computed tomography angiography 3 days after a successful endovascular treatment. The study showed a bilateral ICA dissection with bilateral hypertrophic SPs and a close relationship of ICAs with both SPs anteriorly and C1 transverse process posteriorly. Considering the occurrence of ICA compression by a styloid/C1 ...
Sickle cell disease (SCD) increases the risk for stroke by 200 to 400 times; 5-8% of patients with SCD develop symptomatic cerebrovascular disease. Sickled cells adhere to vessel walls leading to intimal and medial damage and subsequent stenosis and occlusion. Sickle cell vasculopathy (SCV) affects small and large vessels but the distal internal carotid artery and the proximal middle cerebral arteries are the most commonly involved.. Transcranial Doppler is useful as a screening tool to predict SCV. Time averaged mean velocities ,170 cm/sec may indicate hemodynamically significant stenosis and require MR angiography for anatomic confirmation. Exchange transfusion may reverse the perfusion disturbance diagnosed by Doppler and MR angiography.. Moya moya is a description of progressive stenosis of the supraclinoid internal carotid artery with enlargement of the perforating arteries and development of collateral vessels at the circle of Willis giving rise to a puff of smoke appearance. Moya moya ...
Journal of Ophthalmology is a peer-reviewed, Open Access journal that publishes original research articles, review articles, and clinical studies related to the anatomy, physiology and diseases of the eye. Submissions should focus on focusing on new diagnostic and surgical techniques, instrument and therapy updates, as well as clinical trials and research findings.
The prevalence of internal carotid artery (ICA) morphological variations (MV), their characteristics, and their possible association with carotid stenosis, vascular risk factors, and previous transient ischemic attack or ischemic stroke was investigated in a consecutive series of patients.Within a seven-month period, 1217 patients (557 men and 660 women; mean age [ SD] 62.718.1 years) consecutively referred to the Laboratory of Neurosonology, University of LAquila, Italy, underwent a neck vessel examination using a high-resolution B-mode ultrasound device with a 7.5 MHz linear phased array probe.ICA MV were present in 319 (26.2%) patients; they were unilateral in 201 patients (63.0%) and bilateral in 118 patients (37.0%). Patients with ICA MV were older than those without ICA MV (66.319.9 years versus 61.418.0 years, P,0.0001) and were mostly women (62.4%, P=0.0008). Tortuosity was present in 195 (44.6%) arteries, kinking in 236 arteries (54.0%) and coiling in six arteries (1.4%). Carotid ...
The internal carotid artery enters the skull and supplies the anterior part of the brain (via cerebral branches), the eye and its appendages, and sends branches to the forehead and nose. It has many curvatures in different parts of its path. When it passes through the carotid canal and the side of the body of the sphenoid bone, it has...
Antithrombotic treatment of ischemic stroke among patients with occlusion or severe stenosis of the internal carotid artery: A report of the Trial of Org 10172 in Acute Stroke Treatment (TOAST).
Useful mnemonics to remember the branches of the internal carotid artery is: A VIPS COMMA calming voices make intra-operative surgery pleasurable and almost memorable Mnemonics A VIPS COMMA A: anterior choroidal artery (C7) V: Vidian arte...
TY - JOUR. T1 - Anterior displacement of the mandible for better exposure of the distal segment of the extracranial carotid artery. AU - Cantore, G. P.. AU - Delfini, R.. AU - Mariottini, A.. AU - Santoro, A.. AU - Cascone, P.. PY - 1987/3. Y1 - 1987/3. N2 - Anterior displacement of the mandible (ADM) was performed in 34 patients undergoing surgery for malformations or atheromatous lesions of the distal segment of the extracranial internal carotid artery (ICA). This procedure greatly facilitates surgical access to the upper cervical region and has several advantages over mandibulotomy-mandibulectomy, namely: A shorter operating time, sparing of the inferior alveolar nerve and of the mandibular branch of cranial nerve VII, with no need for post-operative immobilization of the mandible. ADM permits the correction of ICA lesions extending as far as the first cervical vertebra. For lesions extending into the carotid canal ADM needs to be supplemented by various other procedures via the base of the ...
Dear Craig, Thanks for asking. In the article: Moneta GL, Edwards JM, Papanicolaou G, Hatsukami T, Taylor LM Jr, Strandness DE Jr, Porter JM., Screening for asymptomatic internal carotid artery stenosis: duplex criteria for discriminating 60% to 99% stenosis. J Vasc Surg. 1995 Jun;21(6):989-94 Moneta and colleagues use a Doppler angle of 60 degrees (page 990 column 2 top) using the distal cervical ICA as a reference. If you look at Figure 2, page 991, note that the relationship between Angiographic percent diameter reduction and Doppler parameters such as PSV, EDV and ICA/CCA PSV Ratio is not a narrow line. There is considerable variation between patient in the relationship between Angiography and Doppler. I think that this variation is related to differences in intracranial collateral circulation. The experience of flownet writers contributing to this conversation thread includes this between patient variation. At the University of Washington Ultrasound Reading Center, we are measuring ...
A, Measurement of internal carotid artery (ICA) calcification by semiquantitative methods. A region of interest is drawn around the calcified artery in a wide w
Variations of the course of the internal carotid artery in the parapharyngeal space and their frequency were studied in order to determine possible risks for acute haemorrhage during pharyngeal surgery and traumatic events, as well as their possible relevance to cerebrovascular disease. The course o …
This is an article about the segments, branches and clinical aspects of the internal carotid arteries. Learn all about these important blood vessels here!
KAZEM FATHIE, M.D., F.A.C.S., F.I.C.S., Ph.D. THE patient whose case I shall describe had a large aneurysmal tumor of the internal carotid artery. It had
We read with great interest the recent article by Goldberg et al1 entitled, Cerebrovascular Disease in COVID-19. In a patient with coronavirus 2019 (COVID-19) illness, the authors presented a case of evolving acute infarcts on CT head examinations at different time points, as well as high-grade stenosis of the proximal right internal carotid artery. With regard to the right internal carotid artery, the authors state, Given that the patient had evidence of mild, diffuse extracranial and intracranial atherosclerotic disease, the high-grade stenosis of the right ICA was favored to represent atherosclerotic disease; however, acute thrombus could have a similar appearance. While the authors may be correct in their interpretation of the case, we suspect that carotid thrombosis is a very frequent sequela of COVID-19-associated stroke. We have recently seen cases of acute stroke, in the setting of COVID-19 infection, with imaging features consistent with acute thrombosis in the ipsilateral common ...
This 48 year old woman presented to the department of vascular surgery due to recurrent pain in both legs. She suffers from hypertension, hyperlipidemia and coronary artery disease. She has previously been diagnosed with a high-grade stenosis of the right internal carotid artery and occlusion of the left internal carotid artery, andis as well status post dilatation and stenting of the circumflex coronary artery. Additional relevant vascular disease and surgery include occlusion of the right subclavian artery, aortobifemoral bypass grafting due to high-grade stenosis, and occlusion of the common, external and internal iliac arteries on both sides. [...] ...
Aortic archesâ€On both sides, the common carotid artery is derived by an elongation of that segment of the horn of the aortic sac between the origins of the third and fourth aortic arches. The proximal segment of the internal carotid artery is formed by the third aortic arch, its distal segment by the cranial extension of the paired dorsal aorta rostral to the carotid duct. The external carotid artery, a new vessel, joins the internal carotid artery at its point of origin. On the left the distal part of the definitive aortic arch is formed by the fourth aortic arch and the segment of the paired dorsal aorta between the carotid duct and the seventh dorsal intersegmental artery; on the right side these segments form the proximal part (base) of the right subclavian artery. The proximal part of the sixth arch on each side becomes the stem of the right or left pulmonary artery. Its distal part on the right loses its connection with the dorsal aorta and disappears. The connection with the dorsal ...
Looking for online definition of cervical part of internal carotid artery in the Medical Dictionary? cervical part of internal carotid artery explanation free. What is cervical part of internal carotid artery? Meaning of cervical part of internal carotid artery medical term. What does cervical part of internal carotid artery mean?
TY - JOUR. T1 - Subdural hematoma in the setting of internal carotid artery occlusion. T2 - CT studies. AU - Pascuzzi, Robert. AU - Boyko, Orest. AU - Voelker, Joseph L.. PY - 1989. Y1 - 1989. N2 - A 72-year-old woman with previously symptomatic internal carotid artery occlusion subsequently presented with an acute hemispheric deficit. The patient was initially diagnosed as having an ischemic infarction but eventually was shown to have a subacute subdural hematoma with delay in surgical evacuation and a major permanent deficit. We speculate that internal carotid artery occlusion may predispose the patient to greater morbidity from subdural hematoma. Patchy hemispheric infarction may reflect greater vulnerability to extrinsic hemispheric compression in the setting of carotid occlusion. This case illustrates the necessity for vigorous pursuit of the diagnosis of subdural hematoma in patients presumed to have transient ischemic attacks or acute cerebral infarction.. AB - A 72-year-old woman with ...
article{09c0a925-e49d-4f96-88c5-8518027b9c58, abstract = {An aggregation of substance P (SP)- and calcitonin gene-related peptide (CGRP)-containing nerve cells (internal carotid mini-ganglion) is described at the junction between the greater superficial petrosal nerve and the internal carotid nerve close to the internal carotid artery. A retrograde tracer dye technique demonstrates that this ganglion and the trigeminal and superior vagal ganglia supply the internal carotid artery with SP/CGRP fibers at, above and below this level, respectively. Implications of this finding for cranial painful syndromes in man are discussed.}, author = {Hardebo, Jan Erik and Suzuki, Norihiro and Owman, Christer}, issn = {0304-3940}, language = {eng}, number = {1}, pages = {39--45}, publisher = {Elsevier}, series = {Neuroscience Letters}, title = {Origins of substance P- and calcitonin gene-related peptide-containing nerves in the internal carotid artery of rat}, url = ...
TY - JOUR. T1 - Risk factors for neurological worsening and symptomatic watershed infarction in internal carotid artery aneurysm treated by extracranial-intracranial bypass using radial artery graft. AU - Matsukawa, Hidetoshi. AU - Tanikawa, Rokuya. AU - Kamiyama, Hiroyasu. AU - Tsuboi, Toshiyuki. AU - Noda, Kosumo. AU - Ota, Nakao. AU - Miyata, Shiro. AU - Oda, Jumpei. AU - Takeda, Rihee. AU - Tokuda, Sadahisa. AU - Kamada, Kyousuke. N1 - Publisher Copyright: ©AANS, 2016. Copyright: Copyright 2019 Elsevier B.V., All rights reserved.. PY - 2016/8. Y1 - 2016/8. N2 - OBJECTIVE: The revascularization technique, including bypass created using the external carotid artery (ECA), radial artery (RA), and M 2 portion of middle cerebral artery (MCA), has remained indispensable for treatment of complex aneurysms. To date, it remains unknown whether diameters of the RA, superficial temporal artery (STA), and C 2 portion of the internal carotid artery (ICA) and intraoperative MCA blood pressure have ...
BACKGROUND AND PURPOSE: Redundant internal carotid arteries have been considered a risk factor in tonsillectomy, adenoidectomy, and surgical treatment of peritonsillar abscess and also a potentially treatable cause of stroke. However, an association between internal carotid artery redundancy and spontaneous dissection has not yet been clearly demonstrated. METHODS: We reviewed, for spontaneous carotid artery dissection, records of all patients admitted to our institution during the period from 1986 through 1992 with the diagnosis of stroke or transient ischemic attack. We also reviewed 108 percutaneous cerebral arteriograms performed between September 1992 and December 1992 for presence of carotid artery redundancies. RESULTS: Thirteen patients exhibited spontaneous dissection. Of these, 8 of 13 (62%) patients and 13 of 20 (65%) internal carotid arteries, viewed to the siphon, had significant redundancies, kinks, coils, or loops. Of 108 consecutive arteriograms of patients without dissection, in which
TY - JOUR. T1 - Acute internal carotid artery rupture (carotid blow out). T2 - Emergency treatment by endovascular coil occlusion of carotid artery. A case report. AU - Cherian, M.. AU - Prasad Kalva, S.. AU - Abraham, T.. PY - 2000/1/1. Y1 - 2000/1/1. N2 - We report a rare case of acute internal carotid artery rupture following radical resection and radiotherapy for an ulcerative carcinoma of the tongue. The patient presented with acute bleeding from the post operative site two weeks following radiotherapy. A surgical pressure bandage was placed and angiography was performed. There was a massive bleed from the ICA once the dressing was removed. The common carotid and internal carotid arteries were occluded with platinum 0.035 coils placed rapidly and the bleeding stopped. As the collateral circulation was good, the patient had no neurological deficits. There are only a few case reports of carotid blow out (carotid rupture) in literature. Most of the cases are treated by either surgery or ...
PubMedID: 25429756 | Binasal hemianopia due to bilateral internal carotid artery atherosclerosis. | Acta ophthalmologica | 8/1/2015
To assess which features of transient monocular blindness (TMB) are associated with atherosclerotic changes in the ipsilateral internal carotid artery (ICA), 337 patients with sudden, transient monocular loss of vision were prospectively studied. History characteristics of the attack were compared with the presence of atherosclerotic lesions of the ipsilateral ICA. All patients were directly interviewed by a single investigator. Of all patients, 159 had a normal ICA on the relevant side, 33 had a stenosis between 0%-69%, 100 had a stenosis of 70%-99%, and 45 had an ICA occlusion.. An altitudinal onset or disappearance of symptoms was associated with atherosclerotic lesions of the ipsilateral ICA. A severe (70%-99%) stenosis was also associated with a duration between 1 and 10 minutes, and with a speed of onset in seconds. An ICA occlusion was associated with attacks being provoked by bright light, an altitudinal onset, and the occurrence of more than 10 attacks. Patients who could not remember ...
TY - JOUR. T1 - Hemodynamics of small aneurysm pairs at the internal carotid artery. AU - Jou, Liang Der. AU - Morsi, Hesham. AU - Shaltoni, Hashem. AU - Mawad, Michel E.. PY - 2012/12/1. Y1 - 2012/12/1. N2 - Cerebral aneurysms carry significant risks because rupture-related subarachnoid hemorrhage leads to serious and often fatal consequences. The rupture risk increases considerably for multiple aneurysms. Multiple aneurysms can grow from the same location of an artery, and the interaction between these aneurysms raises the rupture risk even higher. Four aneurysm pair cases at the internal carotid artery are investigated for their hemodynamic behaviors using patient-specific modeling. For each case, aneurysms are separated from the parent artery and three models are reconstructed, one with two aneurysms and the other two models with only one of the two aneurysms. Results show that the relative anatomic location of one aneurysm to the other may determine the hemodynamic environment of an ...
TY - JOUR. T1 - The stenting to internal carotid artery stenosis (ICS) in petrous portion. The evaluation of plaque figures in magnetic resonance image. AU - Hayashi, K.. AU - Seyama, H.. AU - Yamada, N.. AU - Murao, K.. AU - Iihara, K.. AU - Takahashi, J. C.. AU - Nakajima, N.. AU - Sayama, T.. AU - Morimoto, M.. AU - Mori, H.. AU - Yamamoto, M.. AU - Hishikawa, T.. AU - Nonaka, Y.. AU - Ayabe, J.. AU - Kikuchi, T.. AU - Hyuga, M.. AU - Ookawa, M.. AU - Kudo, T.. AU - Miyamoto, S.. PY - 2006/1/1. Y1 - 2006/1/1. N2 - In the safety stenting, it is important to get to know the characteristics of a plaque. In petrous carotid artery stenosis, it is difficult to know the characteristics of the plaque. We paid our attention to the MPRAGE (Magnetization Prepared Rapid Acquisition with Gradient Echo) method on high resolving power MRI. By the MPRAGE method, low intensity was observed in these lesions of all cases. This result suggested that the plaque in petrous portion was a fibrous plaque. This method ...
Circle of Willis Collateral During Temporary Internal Carotid Artery Occlusion I: Observations From Digital Subtraction Angiography Academic Article ...
We hypothesize that stenting of the internal carotid artery can immediately impede blood flow to the external carotid artery by either plaque shift or stent coverage of the ostium, and thereby cause i
A 77-year-old male patient presented with dysphonia. Endoscopic examination demonstrated a distortion of the posterior pharyngeal wall, which was pulsatile. The axial CT showed left internal carotid artery in a retropharyngeal location. An anomalous course of the carotid artery in the retropharyngeal space is an unusual finding that poses a risk of vascular injury during pharyngeal surgery and intubation. Such an anomaly may be congenital (incomplete descent of the third aortic arch) and may be more pronounced in older patients secondary to atherosclerosis and hypertension as occurred in our case noted here. ...
In the PROFI (Prevention of cerebral embolization by proximal balloon occlusion compared to filter protection during carotid artery stenting) trial, 62 patients undergoing carotid artery stenting with cerebral embolic protection for a ≥60 % symptomatic or ≥80% asymptomatic internal carotid artery stenosis were randomly assigned to proximal balloon occlusion or filter protection. The primary endpoint was the incidence of new cerebral ischaemic lesions as assessed by diffusion weighted magnetic resonance imaging (DW-MRI). Secondary endpoints were the number and volume of new ischaemic lesions and major adverse cardiovascular and cerebral events (MACCE).. The incidence rate of new cerebral ischaemic lesions was 87.1% in the filter group, and 45.2% in the balloon group. The mean number of new cerebral ischaemic lesions was 3.5 in the filter group and 1.0 in the balloon group. There were no significant differences in MACCE at 30 days between the two groups.. In this single centre, randomised ...
Carotid artery stenosis is a frequent cause of ischemic stroke. While any degree of stenosis can cause embolic stroke, a higher degree of stenosis can also cause hemodynamic infarction. The hemodynamic effect of a stenosis can be assessed via perfusion weighted MRI (PWI). Our aim was to investigate the ability of PWI-derived parameters such as TTP (time-to-peak) and Tmax (time to the peak of the residue curve) to predict outcome in patients with unilateral acute symptomatic internal carotid artery (sICA) stenosis. Patients with unilateral acute sICA stenosis (≥50 % according to NASCET), without intracranial stenosis or occlusion, who underwent PWI, were included. Clinical characteristics, volume of restricted diffusion, volume of prolonged TTP and Tmax were retrospectively analyzed and correlated with outcome represented by the modified Rankin Scale (mRS) score at discharge. TTP and Tmax volumes were dichotomized using a ROC curve analysis. Multivariate analysis was performed to determine which PWI
Carotid artery stenosis is a frequent cause of ischemic stroke. While any degree of stenosis can cause embolic stroke, a higher degree of stenosis can also cause hemodynamic infarction. The hemodynamic effect of a stenosis can be assessed via perfusion weighted MRI (PWI). Our aim was to investigate the ability of PWI-derived parameters such as TTP (time-to-peak) and Tmax (time to the peak of the residue curve) to predict outcome in patients with unilateral acute symptomatic internal carotid artery (sICA) stenosis. Patients with unilateral acute sICA stenosis (≥50 % according to NASCET), without intracranial stenosis or occlusion, who underwent PWI, were included. Clinical characteristics, volume of restricted diffusion, volume of prolonged TTP and Tmax were retrospectively analyzed and correlated with outcome represented by the modified Rankin Scale (mRS) score at discharge. TTP and Tmax volumes were dichotomized using a ROC curve analysis. Multivariate analysis was performed to determine which PWI
The complication rates of carotid artery stenting (CAS) vary from 3.0% to 4.4%, and most commonly include ischemic stroke, intracranial hemorrhage, or groin complications. We present the rare complication of a patient who underwent CAS for a symptomatic 90% left internal carotid artery stenosis and developed an expanding cervical hematoma after the procedure with imminent respiratory compromise. After intubation, an arteriogram revealed perforation of the external carotid artery trunk, proximal to the origin of the internal maxillary artery. The artery was subsequently embolized and the hematoma resolved without further intervention. We present a potential catastrophic complication and suggest potential causes and treatment options available.. ...
Milano, 11 Marzo 2008 Functional Data Analysis of the Geometrical Features of the Internal Carotid Artery Laura Maria SANGALLI Piercesare SECCHI Simone VANTINI Alessandro VENEZIANI The ANEURISK Project
Spontaneous internal carotid artery (ICA) dissection (sICAD) results from an intimal tear located around the distal carotid sinus. The mechanisms causing the tear are unknown. This case-control study tested the hypotheses that head movements increase the wall stress in the cervical ICA and that the stress increase is greater in patients with sICAD than in controls. Five patients with unilateral, recanalized, left sICAD and five matched controls were investigated before and after maximal head rotation to the left and neck hyperextension after 45° head rotation to the left. The anatomy of the extracranial carotid arteries was assessed by magnetic resonance imaging and used to create finite element models of the right ICA. Wall stress increased after head movements. Increases above the 80th and 90th percentile were located at the intimal side of the artery wall from 7.4 mm below to 10 mm above the cranial edge of the carotid sinus, i.e., at the same location as histologically confirmed tears in ...
Carotid artery aneurysm: Find the most comprehensive real-world symptom and treatment data on carotid artery aneurysm at PatientsLikeMe. 23 patients with carotid artery aneurysm experience fatigue, depressed mood, pain, anxious mood, and insomnia and use Amphetamine-Dextroamphetamine, Cyclobenzaprine, Handicap/Disability Parking Permit, Pregabalin, and Pyridostigmine to treat their carotid artery aneurysm and its symptoms.
D: Narrowing of the carotid artery by atherosclerosis, a common cause of stroke. ^^. A: Atheromatous plaque development in the region of the common carotid bifurcation.. A/R: Hypercholesterolemia, hypertension, DM and smoking are all strong risk ^^ factors for carotid artery disease.. E: Common, affecting men more than women with increasing incidence with age.. H: May be asymptomatic.. TIAs or CVAs (responsible for 25-30%).. Amaurosis fugax (temporary unilateral vision loss - like a curtain coming down caused by embolism into the ophthalmic artery, the first branch off the internal carotid artery).. E: Often normal. There may be a carotid bruit heard; however, this often does not reflect the degree of stenosis.. Signs of CVA (e.g. dysarthria, dysphasia, weakness in limbs). Signs of systemic vascular disease.. P: The carotid artery bifurcation is an area of the vascular tree where atherosclerosis is common. In combination with systemic risk factors, local haemo-dynamics, including low shear ...
This full color stock medical exhibit depicts a patients aneurysms of the intercranial carotid artery that ultimately resulted in a massive subarachnoid hemorrhage. A series of three images illustrate the extensive subarachnoid hemorrhage from an anterior and lateral view as well as the vasculature of the brain.
Objective: Radiotherapy to the head and neck often results in carotid stenosis, but the course of disease is unknown. We investigated the natural history and progression of asymptomatic carotid stenosis induced by external irradiation. Patients and Methods: The study included 130 carotid arteries in 95 patients who had received external radiation therapy to the head and neck area and who had asymptomatic, mild internal carotid artery or common carotid artery stenosis. Stenosis of 15% to 49% on duplex ultrasound (US) scans defined mild (< 50%) disease. Another 95 arteries in 74 patients with matched degree of carotid artery stenosis but who had not received radiation therapy were used as control. Both groups were followed up prospectively with serial duplex US scanning, and degree of carotid artery stenosis was categorized as 15% to 49%, 50% to 69%, 70% to 99%, and occlusion. Progression of carotid artery stenosis was defined as increase in stenosis from less than 50% to 50% or greater at ...
TY - JOUR. T1 - Understanding and treating moyamoya disease in children. AU - Jodi, L. Smith. PY - 2009/10/13. Y1 - 2009/10/13. N2 - Moyamoya disease, a known cause of pediatric stroke, is an unremitting cerebrovascular occlusive disorder of unknown etiology that can lead to devastating, permanent neurological disability if left untreated. It is characterized by progressive stenosis of the intracranial internal carotid arteries and their distal branches and the nearly simultaneous appearance of basal arterial collateral vessels that vascularize hypoperfused brain distal to the occluded vessels. Moyamoya disease may be idiopathic or may occur in association with other syndromes. Most children with moyamoya disease present with recurrent transient ischemic attacks or strokes. Although there is no definitive medical treatment, numerous direct and indirect revascularization procedures have been used to improve the compromised cerebral circulation, with outcomes varying according to procedure type. ...
Currently, the treatment of blood blister-like aneurysms (BBAs) of the supraclinoid internal carotid artery (ICA) is challenging and utilizes many therapeutic methods, including direct clipping and suturing, clipping after wrapping, clipping after suturing, coil embolization, stent-assisted coil embolization, multiple overlapping stents, flow-diverting stents, covered stents, and trapping with or without bypass. In these therapeutic approaches, the optimal treatment method for BBAs has not yet been defined based on the current understanding of BBAs of the supraclinoid ICA. Therefore, in this study, we aimed to review the literature from PubMed to discuss and analyze the pros and cons of the above approaches while adding our own viewpoints to the discussion. Among the surgical methods, direct clipping was the easiest method if the compensation of the collateral circulation of the intracranial distal ICA was sufficient or direct clipping did not induce stenosis in the parent artery. In addition, ...
Occipital lobe infarcts are traditionally attributed to vertebrobasilar disease. However, anatomical studies indicate that in some people the supply of the posterior cerebral artery is via the carotid system. Jongen et al., retrospectively studied 212 conventional four-vessel cerebral angiograms. Eighteen subjects were excluded beforehand, because of vascular abnormalities causing important hemodynamic changes. They determined whether a fetal variant was present, and in other cases whether there was a functioning posterior communicating artery. In 11 % of hemispheres the posterior cerebral artery was exclusively supplied by the internal carotid artery; in a further 46 % of hemispheres the internal carotid artery might contribute, via a patent posterior communicating artery. In 75 % of subjects the internal carotid artery contributed in at least one hemisphere to the blood flow of the posterior cerebral artery. The implication of the findings is that an occipital lobe infarct can be caused by ...
Images obtained from a CTA will demonstrate absent blood flow beyond the extracranial internal carotid and vertebral arteries; the external carotid arteries and its branches should remain patent. Likewise, brain scintigraphy may also be performed to confirm the diagnosis. Technetium 99m-labeled hexamethylpropyleneaminoxime (99mTc-HMPAO) or 99mTc-labeled ethylene L-cysteinate dimer (99mTc-ECD) are two perfusion agents that made be used. As their names imply, these perfusion agents demonstrate uptake in perfused tissues. In the presence of cerebral demise, the dynamic and static images will demonstrate the absence of radiotracer above the skull base. The bolus of radiotracer will fail to perfuse the intracranial internal carotid and cerebral arteries. Relatively increased flow through the maxillary branch of the external carotid artery will cause relatively increased radiotracer accumulation in the nasal region, resulting in the hot nose sign, which is best seen on the anterior static images. ...
TY - JOUR. T1 - The inaccuracy of simple visual interpretation for measurement of carotid stenosis by arteriography. AU - Schmittling, Zachary C.. AU - McLafferty, Robert B.. AU - Danetz, Jeffrey S.. AU - Hussain, Syed M.. AU - Ramsey, Don E.. AU - Hodgson, Kim J.. PY - 2005/7. Y1 - 2005/7. N2 - Purpose: To determine intraobserver and interobserver variability of carotid arteriography interpretation as well as the reliability of simple visual interpretation (SVI) or eyeballing of arteriography in the measurement of internal carotid artery stenoses. Methods: Intraobserver and interobserver measurements of 200 carotid arteriograms were performed in a blinded fashion by two vascular surgeons (VS1 and VS2) using a digital caliber computer program similar to software available in catheterization laboratories. The distal normal internal carotid artery was used as a frame of reference. These computer-derived measurements were compared with previous SVI measurements, found by retrospective chart ...
One disclosed embodiment comprises a method for treating lesions in the carotid artery of a mammalian body. The method comprises transcervical access and blocking of blood flow through the common carotid artery (with or without blocking of blood flow through the external carotid artery), shunting blood from the internal carotid artery and treating the lesion in the carotid artery.
Hernández-Durán S, Bregy A, Shah AH, Hanft S, Komotar RJ, Manzano GR (2015) Primary spinal cord glioblastoma multiforme treated with temozolomide. J Clin Neurosci 12(22):1877-82. Hernández-Durán S, Hanft S, Komotar RJ, Manzano GR (2015) The role of stereotactic radiosurgery in the treatment of intramedullary spinal cord neoplasms: a systematic literature review. Neurosurg Rev, DOI: 10.1007/s10143-015-0654-y. Cikla U, Li Y, Hernández-Durán S, Kozan A, Baskaya M (2015) Treatment of supraclinoid internal carotid artery iatrogenic pseudoaneurysm with extracranial-to-intracranial bypass and trapping: demonstration of technique with video presentation. Turk Neurosurg 25(2):305-9. Hernández-Durán S, Ogilvy CS (2014) Clinical outcomes of patients with vertebral artery dissection treated endovascularly: a meta-analysis. Neurosurg Rev 2014;37(4):569-77. Hernández-Durán S, Yeh-Hsieh TY, Salazar-Araya (2014) Pedunculated intraventricular subependymoma: review of the literature and illustration of ...
1Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Austria2Department for General and Vascular Surgery, Wilhelminenspital Vienna, Austria3Department of Laboratory Medicine, Wilhelminenspital Vienna, Austria4Cardiology Group Frankfurt-Sachsenhausen, Frankfurt, Germany5Division of Endocrinology, Department of Medicine, University Hospital Ulm, Germany. ...
The retrieval of atheroembolic debris in this case highlights the importance of using embolic protection devices, and the ev3 SpiderFX Filter appeared to have several advantages over earlier devices. Most importantly, the SpiderFX Device allowed me to first easily cross the 80% stentotic lesion in the RICA with my preferred guidewire, a steerable .014-inch Iron Man guidewire. Also, the new mouth indicator (see arrow in Figure 2) and markers at the proximal and distal ends of the filter, all of which are radiopaque, give the SpiderFX filter enhanced visibility. The PROTÉGÉ RX Carotid Stent also provides great visibility with its Tantalum GPS™ Markers, which facilitated postdilation, clearly identifying the balloons position inside the stent (white arrows in Figure 2). The visibility of both devices, combined with the ability to keep the filter low in the distal internal carotid artery without inhibiting passage of the stent delivery system fully across the internal carotid lesion, allowed me ...
BACKGROUND AND PURPOSE: Elevated OEF is a surrogate for misery perfusion. Our aim was to detect misery perfusion in patients with unilateral steno-occlusive disease of the ICA or MCA by using T2*-based MR imaging and to determine the relationship between brain ischemia and OEF.. MATERIALS AND METHODS: Twenty-three patients with unilateral steno-occlusive disease of the ICA or MCA and 8 healthy volunteers were included in this study. Hemodynamic information was obtained in all subjects by MR imaging. Three regions of interest were placed in the anterior, middle, and posterior parts of the brain bilaterally to measure the OEF and CBF values, The OEFs of the regions of interest in the hemispheres ipsilateral and contralateral to the vascular lesions were compared. Brain regions with OEF greater than that in controls were determined as misery perfusion in patients. The association of vascular lesions, rCBF, and the presence of territory infarction with elevated OEF was investigated.. RESULTS: There ...
Disease of the carotid artery is related to, in large part, the amount of atherosclerosis (or plaque) that is present in one of the main arteries to the brain-the Internal Carotid Artery (ICA. )Typically, the more plaque that is present, the narrower the diameter of the internal portion of the artery is that is delivering blood to the brain. One potential cause of stroke is the lack of enough blood flow to the brain that may be reduced as the inner diameter of the ICA get smaller. Alternatively, a piece of the plaque in the ICA could break away and travel to the brain lodging in a small artery producing a stroke by restricting blood flow (and oxygen) to a particular area of the brain.. While degree of narrowing within the carotid artery is a factor in determining whether intervention is required, the presence of symptoms related specifically to the carotid artery in question is another important factor to be considered. People may have a significant degree of narrowing of their ICA-in fact, it ...
Collateral blood flow plays a pivotal role in steno-occlusive internal carotid artery (ICA) disease to prevent irreversible ischaemic damage. Our aim was to investigate the effect of carotid artery disease upon cerebral perfusion and cerebrovascular reactivity and whether haemodynamic impairment is influenced at brain tissue level by the existence of primary and/or secondary collateral. Eighty-eight patients with steno-occlusive ICA disease and 29 healthy controls underwent MR examination. The presence of collaterals was determined with time-of-flight, two-dimensional phase contrast MRA and territorial arterial spin labeling (ASL) imaging. Cerebral blood flow and cerebrovascular reactivity were assessed with ASL before and after acetazolamide. Cerebral haemodynamics were normal in asymptomatic ICA stenosis patients, as opposed to patients with ICA occlusion, in whom the haemodynamics in both hemispheres were compromised. Haemodynamic impairment in the affected brain region was always present in
Two cases are reported in which the diagnosis of a serious condition was delayed as the symptoms had been attributed to migraine. Spontaneous carotid artery dissection is a serious but treatable cause of headache that may be misdiagnosed as recent onset migraine. The importance of correctly identifying this condition is emphasised.. ...
The purpose was to evaluate the efficiacy of the time-of-flight MRA of the carotid artery with a 1.0 Tesla system in comparison to intraarterial digital subtraction angiography for the assessment of carotid artery disease. 101 patients with suspected stenosis of the carotid artery were examined with a 1.0 Tesla scanner in time-of-flight-technique and with the selective i.a. DSA in parallel. Morphological pathologies were registered for all arteries, stenosis of the internal carotid artery of both examinations were blindly graded by applying the NASCET criteria (mild, moderately, severely or occluded). Three different assessment methods were conducted for the MRA data. Kappa, weighted kappa, intraclass correlation were calculated for MRA results compared to DSA. Of the 84 common carotid bifurcation, 66 were classified as mild stenosis by DSA. In this category, MRA correctly identified 60 of these as mild stenosis. Among 60 common carotid artery bifurcation graded as moderate by DSA, 29 were ...
RESULTS: A total of 24 RAHs were recognised in 20 patients: 7 arose from the A1, 5 from the anterior cerebral artery (ACA)-anterior communicating artery (Acom), 11 from the A2, whereas in 1 case, the segment of origin from the ACA could not be identified. Seventeen arteries arose from the lateral wall of the ACA and seven from the superior wall of the A1 segment of the ACA. The RAH was bilaterally seen in 3 patients and unilaterally in 17 with one double RAH. Five RAHs were visible only after contrast injection in the contralateral internal carotid artery. A horizontal segment was visible in 7 arteries, a horizontal followed by a vertical segment without visible intraparenchymal branching pattern was seen in 6 and a horizontal and vertical segment with visible intraparenchymal branching pattern was seen in 11. In five, the artery made a half loop with an inferior-convex curve just before the vertical segment, and in two cases, a full loop was observed ...
APPROVAL FOR THE ENROUTE TRANSCAROTID STENT SYSTEM. THIS DEVICE IS INDICATED FOR USE IN CONJUNCTION WITH THE ENROUTE TRANSCAROTID NEUROPROTECTION SYSTEM (NPS) FOR THE TREATMENT OF PATIENTS AT HIGH RISKFOR ADVERSE EVENTS FROM CAROTID ENDARTERECTOMY WHO REQUIRE CAROTID REVASCULARIZATION AND MEET THE CRITERIA OUTLINED BELOW.1) PATIENTS WITH NEUROLOGICAL SYMPTOMS AND >= 50% STENOSIS OF THE COMMON OR INTERNAL CAROTID ARTERY BY ULTRASOUND OR ANGIOGRAM OR PATIENTS WITHOUT NEUROLOGICAL SYMPTOMS AND >=80% STENOSIS OF THE COMMON OR INTERNAL CAROTID ARTERY BY ULTRASOUND OR ANGIOGRAM; 2) PATIENTS MUST HAVE A VESSEL DIAMETER OF 4-9MM AT THE TARGET LESION; AND 3) CAROTID BIFURCATION IS LOCATED AT MINIMUM 5 CM ABOVE THE CLAVICLE TO ALLOW FOR PLACEMENT OF THE ENROUTE TRANSCAROTID NPS ...
Traditionally, stroke risk stratification has centred on the degree of internal carotid artery stenosis, and the presence of focal neurological symptoms. However, degree of stenosis alone is a relatively poor predictor of future stroke in asymptomatic patients; the Asymptomatic Carotid Surgery Trial highlighting the need to identify a subgroup of asymptomatics that may benefit from intervention. Attempting to define this subgroup has inspired imaging research to identify, in vivo, high-risk plaques. In addition to pre-operative risk stratification of carotid stenosis, contrast enhanced ultrasound (CEUS) may be employed in monitoring response to plaque-stabilising therapies. Unlike most contrast agents used for computed tomography and magnetic resonance imaging, microbubbles used in CEUS remain within the vascular space and can hence be used to study the vasculature. In addition to improving current carotid structural scans, CEUS has potential to add extra information on plaque characteristics.
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Moyamoya disease (MMD) is characterized by progressive stenosis or occlusion of the distal internal carotid artery and simultaneous formation of collateral
Mechanical thrombectomy is establishing itself as a crucial tool for the treatment in some patients with acute stroke. However, it is just a part of a chain from the neurological deficit to the final treatment in this common and potentially devastating disease. The radiologist on duty plays a crucial role in this chain along with the neurologist, as and they address important questions in the process of selecting the patients that could benefit from mechanical thrombectomy.. Based on the initial radiological examination, the following questions should be addressed diligently: i) Is there bleeding? ii) Can the site of arterial occlusion be identified (e.g. distal internal carotid artery, middle cerebral artery (M1, M2)? iii) Can a large necrosis brain necrosis be identified? iv) What is the cause of the vascular occlusion (e.g.: dissection)? v) Are the cervical vessels patent (stenosis, occlusion, dissection?).. The most suitable examination (computed tomography (CT) versus magnetic resonance ...
Lateral and inferior to the parapharyngeal space is the carotid sheath, containing the internal carotid artery and cranial ... This area includes the jugular and hypoglossal canal and the foramen lacerum (through which the internal carotid artery passes ... Lateral to the parapharyngeal space lies the parotid space, which contains the parotid gland, the external carotid artery and ... Behind both the parapharyngeal space and carotid space lies the retropharyngeal space, and deep to this a potential space known ...
"Intracranial Aneurysm of the Internal Carotid Artery Cured by Operation". Annals of Surgery. 107 (5): 654-9. doi:10.1097/ ... both carotid arteries and both vertebral arteries) that supply the brain. When the aneurysm has been located, platinum coils ... Those of the basilar artery and posterior cerebral artery are hard to reach surgically and are more accessible for endovascular ... a catheter is inserted into the femoral artery in the groin and advanced through the aorta to the arteries ( ...
"THe bulbar conjunctival vessels in occlusion of the internal carotid artery". Archives of Internal Medicine. 104 (1): 53-60. ... Carotid artery occlusion is associated with slower conjunctival blood flow and apparent capillary loss.[3] ... The blood supply to the palpebral conjunctiva (the eyelid) is derived from the external carotid artery. However, the ... conjunctival and palpebral conjunctival vessels are supplied by both the ophthalmic artery and the external carotid artery, to ...
Carotid sulcus lodging cavernous sinus and internal carotid artery Sphenoidal sinusesEdit. These are asymmetrical air sinuses ...
The incidence of internal carotid artery dissection following cervical spine manipulation is unknown.[151] The literature ... There is very low evidence supporting a small association between internal carotid artery dissection and chiropractic neck ... Chung CL, Côté P, Stern P, L'espérance G (2014). "The Association Between Cervical Spine Manipulation and Carotid Artery ... Vertebrobasilar artery stroke (VAS) is statistically associated with chiropractic services in persons under 45 years of age,[ ...
Internal carotid artery. Coronal section of right temporal bone. Prominence of the facial canal labeled at top, fourth from the ... is a Z-shaped canal running through the temporal bone from the internal acoustic meatus to the stylomastoid foramen. In humans ...
Internal carotid artery. Auditory ossicles. Tympanic cavity. Deep dissection. This article incorporates text in the public ... from which it is separated by a thin plate of bone perforated by the tympanic branch of the internal carotid artery, and by the ... deep petrosal nerve which connects the sympathetic plexus on the internal carotid artery with the tympanic plexus on the ... The anterior wall (or carotid wall) is wider above than below; it corresponds with the carotid canal, ...
Internal carotid artery. This article incorporates text in the public domain from page 132 of the 20th edition of Gray's ...
Internal carotid artery. Auditory ossicles. Tympanic cavity. Deep dissection. Aditory ossicles. Incus and malleus. Deep ...
There is no costocervical artery. There is no direct connection between the internal carotid artery and the vessels of the ... The arteries that leave the aortic arch are positioned symmetrically. ...
"Aberrant internal carotid artery , Radiology Case , Radiopaedia.org". radiopaedia.org. Retrieved 2017-05-02. da Silva RA, Gross ... This sign is known as "Brown's sign". A deficient bony plate along the tympanic portion of the internal carotid artery ( ... particularly in the carotid bodies (at the bifurcation of the common carotid artery in the neck) and in aortic bodies (near the ... Carotid paraganglioma (carotid body tumor): Is the most common of the head and neck paragangliomas. It usually presents as a ...
... and treatment of strangulation-induced bilateral dissection of the cervical internal carotid artery". Journal of Neurosurgery. ... Clinical symptoms of these internal injuries may include neck and sore-throat pain, voice changes (hoarse or raspy voice or the ... Victims may have internal injuries, such as laryngo-tracheal injuries, digestive tract injuries, vascular injuries, ...
The internal carotid and vertebral arteries. Right side. Course and distribution of the glossopharyngeal, vagus, and accessory ... Passing inferiorly and anteriorly between the internal and external carotid arteries, it divides upon the side of the tongue ...
The internal carotid and vertebral arteries. Right side. Distribution of the maxillary and mandibular nerves, and the ... The lingual vein passes medial to the hyoglossus, and the lingual artery passes deep to the hyoglossus. Laterally, in between ... the stylohyoid ligament and the lingual artery and lingual vein. ...
The internal carotid and vertebral arteries. Right side. Muscles of the palate seen from behind. Dissection of the pharyngeal ...
In vascular Eagle syndrome, the elongated styloid process comes in contact with the internal carotid artery below the skull. In ... Repair of a damaged carotid artery is essential in order to prevent further neurological complications.[citation needed] ... Hoffmann, E.; Räder, C.; Fuhrmann, H.; Maurer, P. (2013). "Styloid-carotid artery syndrome treated surgically with Piezosurgery ... or styloid-carotid artery syndrome)[3] is a rare condition commonly characterized but not limited to - sudden, sharp nerve-like ...
Origin of arteries[edit]. The left and right internal carotid arteries arise from the left and right common carotid arteries. ... The posterior communicating artery is given off as a branch of the internal carotid artery just before it divides into its ... Blood flows up to the brain through the vertebral arteries and through the internal carotid arteries. ... In another variation the anterior communicating artery is a large vessel, such that a single internal carotid supplies both ...
The external and internal carotid artery 2. The internal jugular vein 3. The deep cervical lymph nodes 4. The 10th cranial ... and internal maxillary branches: more deeply are the internal carotid, the internal jugular vein, and the vagus nerve, ... are the submental artery and the mylohyoid artery and nerve. The posterior part of this triangle contains the external carotid ... the external carotid, being crossed by the facial nerve, and gives off in its course the posterior auricular, superficial ...
Spangler, E. L.; Brown, C.; Roberts, J. A.; Chapman, B. E. (2007). "Evaluation of internal carotid artery segmentation by ... in the following areas Craniofacial pathologies and anatomical studies KCOT Ameloblastoma Cysts Condyle Volumes Carotid artery ...
Abducens nerve Internal carotid artery accompanied by the Internal carotid plexus These nerves, with the exception of CN V2, ... The carotid siphon of the internal carotid artery, and cranial nerves III, IV, V (branches V1 and V2) and VI all pass through ... If the internal carotid artery ruptures within the cavernous sinus, an arteriovenous fistula is created (more specifically, a ... Above: optic tract, optic chiasma, internal carotid artery. Inferiorly: Foramen lacerum and the junction of the body and ...
"Internal Carotid Artery Dissection in Brazilian Jiu-Jitsu". Journal of Cerebrovascular and Endovascular Neurosurgery. 19 (2): ... In BJJ, the chokes that are used put pressure on the carotid arteries, and may also apply pressure to the nerve baroreceptors ...
... branches of the internal carotid artery inside the skull. When the internal carotid artery becomes completely blocked, the fine ... These vessels are the ACA (anterior cerebral artery), MCA (middle cerebral artery), and ICA (internal carotid artery). The ... middle cerebral artery or MCA). This procedure is also commonly referred to as an EC-IC (External Carotid-Internal Carotid) ... such as the external carotid artery or the superficial temporal artery to replace its circulation. The arteries are either sewn ...
The carotid and vertebral arteries are most commonly affected. Middle and distal regions of the internal carotid arteries are ... FMD can be found in almost every artery in the human body, but most often affects the carotid, vertebral, renal arteries and ... Patients with FMD in the carotid arteries typically present around 50 years of age. Symptoms of craniocervical involvement ... Ex vivo renal artery reconstruction is sometimes used for complex diseases where branches of the renal artery are affected. ...
The common carotid artery divides into the internal and the external carotid arteries. The internal carotid artery becomes the ... Arterial dissections are tears of the internal lining of arteries, often associated with trauma. Dissections within the carotid ... From the basilar artery are two posterior cerebral arteries. Branches of the basilar and PCA supply the occipital lobe, brain ... The carotid arteries cover the majority of the cerebrum. ... Arteries supplying oxygen and nutrients to the brain are often ...
These arteries are both branches of the external carotid artery. The sublingual vein drains into the lingual vein, which then ... flows into the internal jugular system. The sublingual glands receive their parasympathetic input via the chorda tympani nerve ... which are branches of the lingual artery and facial artery, respectively. ... The sublingual glands receive their primary blood supply from the sublingual and submental arteries, ...
Odd-toed perrisodactyls such as horses lack a carotid rete, but since the internal carotid artery passes through the guttural ... near the internal carotid artery. Clinical signs include unilateral or bilateral epistaxis due to erosion of the artery walls, ... nasal bleeding caused by damage to the internal carotid artery; with vagus nerve involvement there may be laryngeal hemiplegia ... The external carotid artery passes ventral to the medial compartment before crossing to the lateral wall of the lateral ...
The internal carotid artery does not travel through foramen lacerum. The segment of the internal carotid artery that travels ... The internal carotid artery passes from the carotid canal in the base of the skull, emerging and coursing superior to foramen ... Furthermore, one of the terminal branches of the ascending pharyngeal artery (itself a branch of the external carotid artery) ... The artery of pterygoid canal, the nerve of pterygoid canal and some venous drainage pass through the foramen lacerum. In the ...
... it is generally the common carotid artery. occludable - the JVP can be stopped by occluding the internal jugular vein by ... this is not always an accurate way to differentiate the JVP from the carotid pulse. The carotid artery only has one beat in the ... The a wave corresponds to right atrial contraction and ends synchronously with the carotid artery pulse. The peak of the 'a' ... The internal jugular vein is visualised when looking for the pulsation. In healthy people, the filling level of the jugular ...
In the cavernous sinus it runs alongside the internal carotid artery. It then enters the orbit through the superior orbital ... as can aneurysms of the intracavernous carotid artery. Mass lesions that push the brainstem downward can damage the nerve by ...
The ophthalmic artery derived from internal carotid artery and its branches. (optic nerve is yellow) Superficial dissection of ...
彈性動脈為管徑最大的動脈,通常離開心臟不遠,如主動脈、胸主動脈(thoracic aorta)、腹主動脈(abdominal aorta)、鎖骨下動脈(subclavian artery)、總頸動脈(common carotid artery)。其所承受 ... Tunica media:主體由環形排列的平滑肌細胞組成。彈性纖維板不發達,僅在最內與最外層形成明顯彎曲狀的內
"THe bulbar conjunctival vessels in occlusion of the internal carotid artery". Archives of Internal Medicine. 104 (1): 53-60. ... Archives of Internal Medicine. 147 (1): 67-69. doi:10.1001/archinte.147.1.67. ISSN 0003-9926. PMID 3800533.. ...
... a different arrangement of the carotid arteries, a gall bladder, differences in the skull bones, and lack the Dyck texture ... Different nations have different methods of handling internal and international trade. Australia has banned the export of its ...
Neck arteriesEdit. Both lorisoids and cheirogaleid lemurs have replaced the internal carotid artery with an enlarged ascending ... pharyngeal artery.[94]. Ankle bonesEdit. Strepsirrhines also possess distinctive features in their tarsus (ankle bones) that ...
Surrounding structures such as the pleura and carotid artery are also at risk of damage with the potential for pneumothorax or ... Archives of Internal Medicine. 47 (2): 259-287. doi:10.1001/archinte.1931.00140200095007.. ... One reason veins are preferred over arteries for intravascular administration is because the flow will pass through the lungs ... even cannulation of the artery. There are several types of central IV access, depending on the route that the catheter takes ...
Harrison's Principles of Internal Medicine, 17th Edition *^ a b c d e f Neumar RW, Otto CW, Link MS, et al. (November 2010). " ... Coronary artery disease (CAD). *Coronary artery aneurysm. *Spontaneous coronary artery dissection (SCAD) ...
Beberapa ahli lain mempertimbangan klasifikasi berdasarkan fenotipe seperti keberadaan internal carotid artery plaque, intima- ... "Department of Internal Medicine and Cardioangiology, University of Palermo; Pinto A, Tuttolomondo A, Di Raimondo D, Fernandez P ... baik yang bersifat intrakranial seperti moderate middle cerebral artery stenosis, ekstrakranial seperti vertebral artery origin ... Sistem TOAST membagi stroke menjadi 5 subtipe yaitu,[11][12] large artery atherosclerosis (LAAS), cardiaoembolic infarct (CEI ...
... a network of arteries originating from the ophthalmic artery. The ophthalmic rete is analogous to the carotid rete found in ... Internal adaptations. The use of countercurrent heat exchange with blood flow allows for regulated conservation/ elimination of ... The interatrial artery of the ostrich is small in size and exclusively supplies blood to only part of the left auricle and ... The coronary arteries start in the right and left aortic sinus and provide blood to the heart muscle in a similar fashion to ...
Coronary artery aneurysm. *head / neck *Intracranial aneurysm. *Intracranial berry aneurysm. *Carotid artery dissection ... "Journal of General Internal Medicine. 33 (4): 539-550. doi:10.1007/s11606-017-4277-6. PMC 5880769. PMID 29340938.. ... leading to pathologic changes in the small arteries of the kidney. Affected arteries develop endothelial dysfunction and ... preexisting diabetes or coronary artery disease, mental illness, and sedentary lifestyle.[3] Several studies have concluded ...
... a branch of the external carotid artery. The lingual veins, drain into the internal jugular vein. The floor of the mouth also ... Taste and sensation: internal branch of the superior laryngeal nerve (itself a branch of the vagus nerve, CN X) ... secondary blood supply to the root of tongue from the tonsillar branch of the facial artery and the ascending pharyngeal artery ... The tongue receives its blood supply primarily from the lingual artery, ...
... by stretch receptors in the walls of the aortic arch and carotid sinuses at beginnings of the internal carotid arteries.[13] ... at the beginning of the internal carotid artery) monitor the arterial blood pressure.[46] Rising pressure is detected when the ... in the carotid artery and aortic arch. A change in the partial pressure of carbon dioxide is detected as altered pH in the ... internal organs, and great veins.[25][26] Apart from the internal regulation of temperature, a process called allostasis can ...
In humans, hypoxia is detected by the peripheral chemoreceptors in the carotid body and aortic body, with the carotid body ... to an extent that parallels the degree to which resting mean pulmonary artery pressure is elevated. Although the severity of ... Annals of Internal Medicine. 141 (10): 789-800. doi:10.7326/0003-4819-141-10-200411160-00010. PMID 15545679.. ...
Coronary artery aneurysm. *head / neck *Intracranial aneurysm. *Intracranial berry aneurysm. *Carotid artery dissection ... Lowenstein J (January 1980). "Drugs five years later: clonidine". Annals of Internal Medicine. 92 (1): 74-77. doi:10.7326/0003- ... Kidney disease / renal artery stenosis - the normal physiological response to low blood pressure in the renal arteries is to ... Voiculescu A, Rump LC (January 2009). "[Hypertension in patients with renal artery stenosis]". Der Internist (in German). 50 (1 ...
... the internal carotid artery is somewhat dilated. This part of the artery is known as the carotid sinus or the carotid bulb. The ... neuroangio.org/anatomy-and-variants/internal-carotid-artery-and-its-aneurysms Aneurysms of the Internal Carotid Artery. ... The named branches of the petrous segment of the internal carotid artery are: the vidian artery or artery of the pterygoid ... They arise from the common carotid arteries where these bifurcate into the internal and external carotid arteries at cervical ...
... it shows a dissection of the left internal carotid artery, dissection of both vertebral arteries in their V1 and V2 segments ... The other type, carotid artery dissection, involves the carotid arteries. Vertebral artery dissection is further classified as ... Vertebral artery dissection is less common than carotid artery dissection (dissection of the large arteries in the front of the ... or for symptoms of carotid artery dissection to occur at the same time as those of vertebral artery dissection.[2] Some give a ...
Internal carotid artery. *Tip of basilar artery. Saccular aneurysms tend to have a lack of tunica media and elastic lamina ... Aneurysms in the posterior circulation (basilar artery, vertebral arteries and posterior communicating artery) have a higher ... On the other hand, smooth muscle cells from the tunica media layer of the artery moved into the tunica intima, where the ... Basilar artery aneurysms represent only 3%-5% of all intracranial aneurysms but are the most common aneurysms in the posterior ...
Direct branches of the vertebral artery: The vertebral artery supplies an area between the other two main arteries, including ... The control of ventilation via signals from the carotid and aortic bodies. Respiration is regulated by groups of chemoreceptors ... called the internal arcuate fibers or fasciculi, decussate from one side of the medulla to the other to form the medial ... Blood to the medulla is supplied by a number of arteries.. *Anterior spinal artery: This supplies the whole medial part of the ...
To its sides run the carotid arteries and inferior thyroid arteries; and to its sides on its back surface run the recurrent ... Note that despite being internal, the tracheae of arthropods are lined with cuticular tissue and are shed during moulting ( ... To the front left lie the large blood vessels the aortic arch and its branches the left common carotid artery and the ... These arteries join (anastamoses) with ascending branches of the bronchial arteries, which are direct branches from the aorta, ...
common carotid. *External carotid. *Internal carotid. *Carotid body. *Carotid sinus. *Carotid bifurcation ... ACA (anterior communicating, Recurrent artery of Heubner, Orbitofrontal artery). *MCA (anterolateral central, Prefrontal artery ... The arteries and veins have three layers. The middle layer is thicker in the arteries than it is in the veins: *The inner layer ... In all arteries apart from the pulmonary artery, hemoglobin is highly saturated (95-100%) with oxygen. In all veins apart from ...
H05.81) Carotid cavernous fistula. *(H70.1) Mastoid fistula *Craniosinus fistula: between the intracranial space and a ... with both external and internal openings Incomplete a fistula with an external skin opening, which does not connect to any ... Pulmonary arteriovenous fistula: between an artery and vein of the lungs, resulting in shunting of blood. This results in ... where healthy tissue is pulled over the internal side of the fistula to keep feces or other material from reinfecting the ...
It pierces the eyeball close to the optic nerve, sending branches over the internal surface of the retina, and these terminal ... The central retinal artery (retinal artery) branches off the ophthalmic artery, running inferior to the optic nerve within its ... ACA (anterior communicating, Recurrent artery of Heubner, Orbitofrontal artery). *MCA (anterolateral central, Prefrontal artery ... The central retinal artery is formed from the proximal part of the hyaloid artery after atrophy of its distal part has formed ...
right subclavian artery. left common carotid artery (directly from arch of aorta on left mostly)[edit]. internal carotid artery ... posterior communicating artery. external carotid artery[edit]. *Arising in carotid triangle[1] *Superior thyroid artery *Hyoid ... 2.2 left common carotid artery (directly from arch of aorta on left mostly) *2.2.1 internal carotid artery ... superior rectal artery. median sacral[edit]. common iliac[edit]. Common iliac arteries[edit]. internal iliac artery[edit]. ...
The pretracheal layer of the deep cervical fascia passes in front of the carotid sheath (i.e., common carotid artery, internal ... It extends medially in front of the carotid vessels and assists in forming the carotid sheath. ...
... ascending pharyngeal artery, internal carotid artery, and the artery of the pterygoid canal.[8] ... The posterior auricular artery is a direct branch of the external carotid artery, and the anterior auricular arteries are ... and the labyrinthine artery, arising from either the anterior inferior cerebellar artery or the basilar artery.[8] ... Other arteries which are present but play a smaller role include branches of the middle meningeal artery, ...
The groove is curved like the italic letter f, and lodges the internal carotid artery and the cavernous sinus.[citation needed] ... The carotid groove is a anatomical groove in the sphenoid bone located above the attachment of each great wing of the sphenoid ... Sphenoid bone is in yellow, and carotid groove is labeled at center of sphenoid. ... Retrieved from "https://en.wikipedia.org/w/index.php?title=Carotid_groove&oldid=915856032" ...
A review". Archives of Internal Medicine. 1. 146 (1): 179-85. doi:10.1001/archinte.1986.00360130217028. PMID 3510595.. ... The rise in pulse pressure with age is attributed to increased stiffness of the arteries.[32] An age-related rise in blood ... The most important arterial baroreceptors are located in the left and right carotid sinuses and in the aortic arch.[70] ... Mean blood pressure drops over the whole circulation, although most of the fall occurs along the small arteries and arterioles. ...
Lang, Roberto M. (1985). "Adverse Cardiac Effects of Acute Alcohol Ingestion in Young Adults". Annals of Internal Medicine. 102 ... Its upper and left angle forms a conical pouch, the conus arteriosus, from which the pulmonary artery arises. A tendinous band ... The extra pressure exerted is also needed to stretch the aorta and other arteries to accommodate the increase in blood volume. ... internal (luminal) distance, excluding thickness of walls, although it can also be measured as the external distance.. ...
... the internal carotid artery is somewhat dilated. This part of the artery is known as the carotid sinus or the carotid bulb. The ... neuroangio.org/anatomy-and-variants/internal-carotid-artery-and-its-aneurysms Aneurysms of the Internal Carotid Artery. ... The named branches of the petrous segment of the internal carotid artery are: the vidian artery or artery of the pterygoid ... They arise from the common carotid arteries where these bifurcate into the internal and external carotid arteries at cervical ...
... of the carotid artery, usually caused by atherosclerosis. The internal carotid artery supplies the brain. Plaque often builds ... Plaque can also build up at the origin of the carotid artery at the aorta.] ... up at that division, and causes a narrowing (stenosis). Pieces of plaque can break off and block the small arteries above in ... Carotid stenosis is a narrowing or constriction of the inner surface (lumen) ...
The build-up of plaque in the internal carotid artery may lead to narrowing and irregularity of the arterys lumen, preventing ... The build-up of plaque in the internal carotid artery may lead to narrowing and irregularity of the arterys lumen, preventing ... More commonly, as the narrowing worsens, pieces of plaque in the internal carotid artery can break free, travel to the brain ...
When it passes through the carotid canal and the side of the body of the sphenoid bone, it has... ... The internal carotid artery enters the skull and supplies the anterior part of the brain (via cerebral branches), the eye and ... The internal carotid artery rests on the external carotid arterys outer side at first and then it goes behind it. The internal ... The carotid arteries have two sensory regions in the neck: the carotid sinus and the carotid body. The carotid sinus is ...
Occlusion of Internal Carotid Artery in Kimuras Disease. Tomonori Tamaki and Node Yoji ... In our patient, the pathogenesis of internal carotid artery occlusion was unknown. There have only been a few case reports in ... We suspected that occlusion of this patients internal carotid artery may be caused by the autoimmune mechanism that underlies ... Cerebral angiography demonstrated right internal carotid artery occlusion affecting the C1 segment, with moyamoya-like ...
Thrombosis of Internal Carotid Artery after Soft-palate Injury Br Med J 1957; 2 :750 ... Thrombosis of Internal Carotid Artery after Soft-palate Injury. Br Med J 1957; 2 doi: https://doi.org/10.1136/bmj.2.5047.750 ( ... Thrombosis of Internal.... *Thrombosis of Internal Carotid Artery after Soft-palate Injury ...
Thrombosis of Internal Carotid Artery Treated by Arterial Surgery Br Med J 1957; 2 :264 ... Thrombosis of Internal Carotid Artery Treated by Arterial Surgery. Br Med J 1957; 2 doi: https://doi.org/10.1136/bmj.2.5039.264 ... Thrombosis of Internal.... *Thrombosis of Internal Carotid Artery Treated by Arterial Surgery ...
On the first film of the series the contrast came to a tapered end in the cervical portion of the internal ... 31 cases of pseudo-occlusion of the internal carotid artery were seen; 42 carotid angiograms were available for analysis. ... Carotid Artery Diseases / radiography*. Carotid Artery, Internal / radiography. Humans. Regional Blood Flow. ... In a ten-year period, 31 cases of pseudo-occlusion of the internal carotid artery were seen; 42 carotid angiograms were ...
... Physiol Meas. 2008 May;29(5):585-94. doi: 10.1088/0967-3334/ ... areas is derived from phase-contrast magnetic resonance measurements in the internal carotid arteries and vertebral arteries of ... it is necessary to scale the flow rates to the area of the inflow artery. In this work, a relationship between flow rates and ...
The internal carotid then divides to form the anterior cerebral artery and middle cerebral artery. The internal carotid artery ... the internal carotid artery is somewhat dilated. This part of the artery is known as the carotid sinus or the carotid bulb. The ... The internal carotid artery is a terminal branch of the common carotid artery; it arises around the level of the third cervical ... The named branches of the petrous segment of the internal carotid artery are: *the vidian artery or artery of the pterygoid ...
Noninvasive Carotid Artery Testing C. Y. Oliver Wong, MBBS, PhD; William J. MacIntyre, PhD; Raymundo T. Go, MD ... Noninvasive Carotid Artery Testing. Ann Intern Med. 1995;123:633-634. doi: 10.7326/0003-4819-123-8-199510150-00015 ... has been widely investigated for detecting substantial carotid disease and its functional effects on the brain [2-5]. These ... with which pharmacologic stress tests are used to diagnose coronary artery disease. In the stress brain perfusion study, the ...
During the CTA exams, 1.25-mm slices were acquired, achieving coverage of the internal carotid arteries from the carotid ... CE-CTA appears ready for routine internal carotid artery imaging. @media screen and (max-width: 468px) { .video-detail .doc- ... between total and near-total occlusive disease and mapping the architectural landmarks of the internal carotid artery (ICA) ... Among them, 22 had downward extent of the intracranial ICA reconstitution flow at or above the carotid siphon, eight at the ...
Stenting and secondary coiling of intracranial internal carotid artery aneurysm: technical case report.. Mericle RA1, Lanzino G ... New flexible stents can be used to treat intracranial internal carotid artery aneurysms in difficult-to-access areas, such as ... A 49-year-old woman presented with a dissecting pseudoaneurysm of the horizontal portion of the petrous internal carotid artery ... In addition, the stent acts as an endoluminal scaffold to prevent coil herniation into the parent artery, which allows tight ...
... carotid artery angiogram demonstrates the origin of the ascending pharyngeal artery from the cervical internal carotid artery, ... Normally, the ascending pharyngeal artery arising from the proximal external carotid artery. - Stock Image C007/5818 ... internal carotid, internal carotid artery, medical, neck, pharyngeal arteries, pharyngeal artery, vascular, x ray, x rays, x- ... ascending pharyngeal artery, blood vessel, blood vessels, carotid arteries, carotid artery, cerebrovascular, cervical internal ...
What is Carotid artery, internal? Meaning of Carotid artery, internal medical term. What does Carotid artery, internal mean? ... internal in the Medical Dictionary? Carotid artery, internal explanation free. ... Related to Carotid artery, internal: external carotid artery, internal carotid artery aneurysm ... internal carotid artery. One of the two main divisions of the common CAROTID ARTERY. The internal carotid supplies blood to the ...
... Dirk De ... and treatment of strangulation-induced bilateral dissection of the cervical internal carotid artery: report of three cases," ... A. Sismanis, M. A. Stamm, and M. Sobel, "Objective tinnitus in patients with atherosclerotic carotid artery disease," American ... resolved after carotid artery stenting," American Journal of Neuroradiology, vol. 30, no. 5, pp. 995-997, 2009. View at ...
Aspirin for Asymptomatic Carotid Artery Stenosis Robert G. Hart, MD; Diane H. Solomon, MD ... Aspirin for Asymptomatic Carotid Artery Stenosis. Ann Intern Med. 1996;125:420. doi: https://doi.org/10.7326/0003-4819-125-5- ... compared with those who had carotid endarterectomy and received no aspirin (most myocardial infarctions were unrelated to ... that involved patients with asymptomatic carotid stenosis and was stopped prematurely because of reduced myocardial infarction ...
Doppler ultrasound assessment of the internal carotid artery following carotid endarterectomy.. T S Padayachee, R R Lewis, A K ... Doppler ultrasound assessment of the internal carotid artery following carotid endarterectomy.. T S Padayachee, R R Lewis, A K ... Doppler ultrasound assessment of the internal carotid artery following carotid endarterectomy.. T S Padayachee, R R Lewis, A K ... Thirty-eight patients underwent unilateral carotid endarterectomy, eight of whom had severe internal carotid artery disease at ...
Internal carotid artery (ICA) agenesis is a rare developmental anomaly and is most frequently asymptomatic, but it may also ... Early diagnosis is essential to rule out potentially life-threatening associated vascular anomalies.Keywords: carotid artery ... Such signs should prompt further diagnostic evaluation to demonstrate the presence of the agenesis of the carotid canal. ... Congenital agenesis of internal carotid artery with ipsilateral Horner presenting as focal neurological symptoms Wassim Farhat ...
... aplasia and hypoplasia of the internal carotid artery are rare congenital malformations. They are usually asymptomatic and ... Anterior Cerebral Artery. Artery formed by the bifurcation of the internal carotid artery (CAROTID ARTERY, INTERNAL). Branches ... CAROTID ARTERY, EXTERNAL) and internal (CAROTID ARTERY, INTERNAL) carotid arteries.. ... The splitting of the vessel wall in one or both (left and right) internal carotid arteries (CAROTID ARTERY, INTERNAL). ...
... bypass to reduce the incidence of stroke in patients with internal carotid artery (ICA) occlusion, controversy continues ... Surgical therapy for the patient with internal carotid artery occlusion and contralateral stenosis J Vasc Surg. 1987 Jun;5(6): ... bypass to reduce the incidence of stroke in patients with internal carotid artery (ICA) occlusion, controversy continues ... One approach, endarterectomy of stenotic lesions of the contralateral carotid bifurcation, has been used for 145 patients with ...
Rogalewski, A. and Evers, S. (2005), Symptomatic Hemicrania Continua After Internal Carotid Artery Dissection. Headache: The ...
Treatment of Cranial Internal Carotid Artery Aneurysm With Willis Covered Stent and Coil Embolization. The recruitment status ... Treatment of distal internal carotid artery aneurysm with the willis covered stent: a prospective pilot study. Radiology. 2009 ... Treatment of Cranial Internal Carotid Artery Aneurysm With Willis Covered Stent and Coil Embolization. ... Comparative Study of Covered Stent With Coil Embolization in the Treatment of Cranial Internal Carotid Artery Aneurysm: A ...
The Pathophysiology of Watershed Infarction in Internal Carotid Artery Disease. Review of Cerebral Perfusion Studies. Isabelle ... Szabo K, Kern R, Gass A, Hirsch J, Hennerici M. Acute stroke patterns in patients with internal carotid artery disease: a ... Lesion patterns and mechanism of ischemia in internal carotid artery disease: a diffusion-weighted imaging study. Arch Neurol. ... Tsiskaridze A, Devuyst G, de Freitas GR, van Melle G, Bogousslavsky J. Stroke with internal carotid artery stenosis. Arch ...
CCA: common carotid artery, ECA: external carotid artery, ICA: internal carotid artery ... Internal Carotid Artery, Treatment, Review 1. Introduction. Dolichoarteriopathies of the internal carotid artery (DICAs), which ... Kinking of the internal carotid artery. Lancet. 1961;1:424-6 14. Leipzig TJ, Dohrmann GJ. The tortuous or kinked carotid artery ... common and left internal carotid arteries in a case with common origin of the innominate trunk and left common carotid artery. ...
Percutaneous Approach is a medical classification as listed by CMS under Upper Arteries range. ... ICD-10-PCS code 03VK3ZZ for Restriction of Right Internal Carotid Artery, ... Includes: Caroticotympanic artery , Carotid sinus","3")>Internal Carotid Artery, Right. Definition: Entry, by puncture or ... Restriction of Right Internal Carotid Artery, Percutaneous Approach 03VK3ZZ. ICD-10-PCS code 03VK3ZZ for Restriction of Right ...
Introduction Compression of the internal carotid artery (ICA) in the cavernous sinus area is a rare event and is mostly ... Compression of the internal carotid artery (ICA) in the cavernous sinus area is a rare event and is mostly associated with ... De Jong T, Matricali B (1990) Asymptomatic occlusion of the internal carotid artery at the skull base. J Neurosurg Sci 34:21-27 ... Yang SH, Lee KS, Lee KY, Lee SW, Hong YK (2008) Pituitary apoplexy producing internal carotid artery compression: a case report ...
Previous Document: Posttraumatic carotid-cavernous fistulae treated by internal carotid artery trapping and high-flow b.... ... Ruptured internal carotid artery bifurcation aneurysm presenting with only intracerebral hemorrhage without subarachnoid ... resonance angiography demonstrated a cerebral aneurysm originating from the bifurcation of the left internal carotid artery, ... 3504353 - Subclavian steal syndrome in a congenitaly anomalous subclavian artery: a case report.. 3310283 - Management options ...
  • it arises around the level of the fourth cervical vertebra when the common carotid bifurcates into this artery and its more superficial counterpart, the external carotid artery. (wikipedia.org)
  • Unlike the external carotid artery, the internal carotid normally has no branches in the neck. (wikipedia.org)
  • The internal carotid artery (Latin: arteria carotis interna) is located in the inner side of the neck in contrast to the external carotid artery. (wikipedia.org)
  • Normally, the ascending pharyngeal artery arising from the proximal external carotid artery. (sciencephoto.com)
  • objectives: Dura of the anterior clinoid process (ACP) is presumably supplied by the ophthalmic and external carotid artery branches. (bioportfolio.com)
  • Dolichoarteriopathies of the internal carotid artery (DICAs), which seldom involve the external carotid artery, can be divided into three types: tortuous, coiling and kinking [ 1 ]. (medsci.org)
  • A simplification of Lie's classification system describes three types of collateral pathways in the setting of ICA absence: 1) flow through the circle of Willis, 2) persistent fetal vessels, and 3) branches from the external carotid artery. (appliedradiology.com)
  • Ectopic branches of the external carotid artery are rare but have critical diagnostic and therapeutic implications. (bmj.com)
  • Superficial temporal artery (STA) to middle cerebral artery (MCA) anastomosis may have inadequate effects in patients with internal carotid artery (ICA) occlusion and severe stenosis of the ipsilateral external carotid artery (ECA), because poor blood flow in the STA leads to insufficient flow to the MCA. (eurekamag.com)
  • We hypothesize that stenting of the internal carotid artery can immediately impede blood flow to the external carotid artery by either plaque shift or stent coverage of the ostium, and thereby cause ischemic symptoms like ipsilateral jaw claudication. (springer.com)
  • Thirty-three patients with high-grade asymptomatic stenosis of the internal carotid artery who underwent endovascular treatment were examined by ultrasound of the external carotid artery and performed an exercise test by chewing chewing gum synchronously to an electronic metronome for 3 min. (springer.com)
  • Ten patients with an isolated, atherosclerotic stenosis of the external carotid artery served as controls. (springer.com)
  • By categorization of the flow velocity at the external carotid artery into faster or slower as 200 cm/sec, the effect was even accentuated. (springer.com)
  • Stenting of the internal carotid artery lead to ipsilateral flow deterioration at the external carotid artery resulting in temporary jaw claudication. (springer.com)
  • The orifice of the external carotid artery (ECA) is also frequently affected. (springer.com)
  • It has become common practice that the stents are implanted across the bifurcation towards the internal carotid artery by covering the orifice of the external carotid artery. (springer.com)
  • The external carotid artery (Latin: arteria carotis externa) arises from the bifurcation of the common carotid artery when it divides into the external and internal carotid arteries. (supakush.com)
  • It is unique as it supplies some intracranial structures (remember, the external carotid artery and its branches usually supply extra-cranial structures). (supakush.com)
  • The external carotid artery (ECA) ascends through the parotid gland. (supakush.com)
  • External carotid artery branches: Some Angry Lady Figured Out PMS. (bryanbishop.net)
  • In many cases, the superior thyroid artery, which supplies the thyroid gland as well as some neck muscles, arises directly from the common carotid, rather than from its usual origin at the external carotid artery. (bryanbishop.net)
  • The internal carotid artery, as mentioned above, supplies the deep structures within the brain and orbits and has no cervical branches, while the external carotid artery supplies the superficial structures of the neck, face, jaw, scalp, and coverings of the brain, also known as the meninges. (bryanbishop.net)
  • I See (I.C.) The external carotid artery is responsible for the blood supply to the neck and face (both superficial and deep face) (see Fig. It is remarkable for the number of curvatures that it presents in different parts of its course. (bryanbishop.net)
  • The internal carotid artery is more of a small continuation of the common carotid artery unlike the external carotid artery that diverges off the common carotid. (bryanbishop.net)
  • There is one external carotid artery on the right side of the neck and one on the left side of the neck. (bryanbishop.net)
  • At the throat it forks into the internal carotid artery and the external carotid artery. (wikipedia.org)
  • The internal carotid artery supplies the brain, and the external carotid artery supplies the face. (wikipedia.org)
  • citation needed] Atherosclerosis causes plaque to form within the carotid artery walls, usually at the fork where the common carotid artery divides into the internal and external carotid artery. (wikipedia.org)
  • The carotid artery divides into the internal carotid artery and the external carotid artery. (wikipedia.org)
  • Blood flows from the common carotid artery(bottom), and divides into the internal carotid artery (left) and external carotid artery (right). (wikipedia.org)
  • We describe a unique case of Kimura's disease in which cerebral infarction was caused by occlusion of the right internal carotid artery. (hindawi.com)
  • Cerebral angiography demonstrated right internal carotid artery occlusion affecting the C1 segment, with moyamoya-like collateral vessels arising from the right opthalamic artery. (hindawi.com)
  • ICD-10-PCS code 03VK3ZZ for Restriction of Right Internal Carotid Artery, Percutaneous Approach is a medical classification as listed by CMS under Upper Arteries range. (aapc.com)
  • CT angiography of the head demonstrates a vessel branching from the cavernous segment of the right internal carotid artery, which crosses the cavernous sinus, and assumes the course of the intracranial left internal carotid artery terminus (Figure 3). (appliedradiology.com)
  • In our study, we reduced cerebral blood flow in the experience animal on average by 30%, by right internal carotid artery ligation . (curehunter.com)
  • (A) Bilateral visualization using a diagnostic catheter in the right internal carotid artery. (onlinejacc.org)
  • During resection of the middle fossa component of a large ventral skull base chondrosarcoma, arterial bleeding was encountered near the right internal carotid artery (ICA). (cureus.com)
  • Flow distributions in five common anatomical variations coexisting with different degrees of stenosis in the right internal carotid artery (RICA) were investigated to obtain detailed flow information. (ntu.edu.sg)
  • Right common carotid artery cervical angiogram demonstrates an aneurysm of the right internal carotid artery upper cervical segment which measures 33 x 25 x 29 mm. (mayoclinic.org)
  • Patient presentation, angiographic features, and treatment of strangulation-induced bilateral dissection of the cervical internal carotid artery: report of three cases," Journal of Neurosurgery , vol. 92, no. 3, pp. 481-487, 2000. (hindawi.com)
  • To evaluate long-term outcome after extracranial internal carotid artery dissection (eICAD) in consideration of the applied antithrombotic therapy. (nih.gov)
  • Styloid process length and styloid/hyoid bone proximity to the internal carotid artery (ICA) have been implicated in certain carotid pathologies (e.g. carotid artery dissection). (bioportfolio.com)
  • Rogalewski, A. and Evers, S. (2005), Symptomatic Hemicrania Continua After Internal Carotid Artery Dissection. (wiley.com)
  • Therefore an internal carotid artery dissection should be considered in a case of 'idiopathic' vocal cord palsy, as they may not necessarily be idiopathic. (ovid.com)
  • This stock medical exhibit features a left carotid artery dissection with subsequent brain injuries. (smartimagebase.com)
  • A 62-year-old man was admitted for acute transient ischemic attack due to spontaneous dissection of proximal left internal carotid artery (ICA) ( Figure 1A ). (onlinejacc.org)
  • Carotid artery stenting combining proximal protection to avoid debris dislodgment and a parallel wire technique to re-enter to the true lumen distal to the dissection was successfully performed without complications ( Figures 2 and 3 ). (onlinejacc.org)
  • (A) Computed tomography scan at admission and (B, C) urgent carotid artery angiography at 2 h after in-hospital stroke, showing artery dissection with slow antegrade flow (arrows) . (onlinejacc.org)
  • Internal carotid artery dissection has been well recognized as a major cause of ischaemic stroke in young and middle-aged adults. (biomedcentral.com)
  • Hypoglossal nerve palsy is a rare manifestations of carotid dissection. (biomedcentral.com)
  • An emergency craniotomy was performed, and traumatic carotid artery (CA) dissection (tCAD) was revealed by cerebral angiography. (signavitae.com)
  • Angiography of the right ICA showed the pearl and string sign at the supraclinoid portion of the ICA, and traumatic carotid artery (CA) dissection (tCAD) was suspected. (signavitae.com)
  • Lyrer P, Engelter S. Antithrombotic drugs for carotid artery dissection (Review). (dentisty.org)
  • A carotid dissection is a tear in one of your carotid arteries. (bryanbishop.net)
  • flow into the ipsilateral anterior cerebral artery (ACA) via the anterior communicating artery (AComm), and flow into the ipsilateral middle cerebral artery (MCA) via flow through the ipsilateral posterior communicating artery (PComm). (appliedradiology.com)
  • Brain MRI revealed a left middle cerebral artery infarction included the optic tract ( Figure 3A ). (alliedacademies.org)
  • CAD, which can lead to thrombosis and occlusion of the anterior, middle cerebral artery or CA, is one of the major causes of ischemic stroke in children. (signavitae.com)
  • The blood supply of the ipsilateral middle cerebral artery (MCA) was most affected by the stenosis of ICA. (ntu.edu.sg)
  • There is also a significant decrease in the number of anastomoses between the middle cerebral artery (MCA) and the ACA in the watershed region of the cortex. (paperity.org)
  • Finally, the communicating portion (C7) contains the posterior communicating artery , the anterior choroidal artery and the anterior and middle cerebral artery . (kenhub.com)
  • M: middle cerebral artery (C7) A: anterior cerebral artery (C7) The last two branches in the mnemonic are the terminal branches of the internal carotid artery. (bryanbishop.net)
  • This artery arises from the common carotid artery in the neck, entering the head at skull base via the carotid canal, and terminates at the bifurcation into the anterior cerebral artery (ACA) and middle cerebral artery (MCA). (medscape.com)
  • 0.01) in patients given aspirin, 80 mg/d, compared with those who had carotid endarterectomy and received no aspirin (most myocardial infarctions were unrelated to surgery). (annals.org)
  • Doppler ultrasound assessment of the internal carotid artery following carotid endarterectomy. (ahajournals.org)
  • Doppler-shifted ultrasound with spectral analysis was used to assess the internal carotid arteries of 48 patients who had undergone carotid endarterectomy (58 carotid endarterectomies). (ahajournals.org)
  • Thirty-eight patients underwent unilateral carotid endarterectomy, eight of whom had severe internal carotid artery disease at the contralateral bifurcation at the time of carotid endarterectomy. (ahajournals.org)
  • Carotid Endarterectomy and Carotid Artery Stenting in the Light of ICSS and CREST Studies. (bioportfolio.com)
  • We analyzed the results of internal carotid artery (ICA) stenosis treatment at our institution according to the treatment modality-carotid endarterectomy (CEA) vs. carotid artery stenting (CAS). (bioportfolio.com)
  • Comparison of two methods for revascularization of the bifurcation of common carotid artery: carotid endarterectomy with longitudinal incision carotid endarterectomy patch angioplasty comp. (bioportfolio.com)
  • Given the paucity of data in the literature, we attempted to evaluate the safety of carotid endarterectomy and carotid artery stenting in carotid near-occlusion. (ajnr.org)
  • A retrospective data base review was performed from January 2010 to December 2018 to identify patients who underwent carotid endarterectomy or carotid artery stenting for symptomatic ICA near-occlusion and had 1-month clinical and imaging follow-up with carotid sonography. (ajnr.org)
  • Of the 39 patients, 25 underwent carotid endarterectomy and 14 underwent carotid artery stenting. (ajnr.org)
  • Patients with carotid artery stenting had 20% restenosis and 79% vessel maturation rates, while patients with carotid endarterectomy had 17.4% restenosis and 84% vessel maturation. (ajnr.org)
  • Carotid artery stenting shows similar outcomes in restenosis and vessel maturation rates compared with carotid endarterectomy for ICA near-occlusion. (ajnr.org)
  • Carotid artery stenting is a revascularization option for carotid near-occlusion if the patient is considered at high risk for carotid endarterectomy. (ajnr.org)
  • Transcarotid/transcervical revascularisation (TCAR) is an alternative to carotid endarterectomy (CEA) and transfemoral carotid stenting (tfCAS). (physiciansweekly.com)
  • Instead of endarterectomy of the ECA, angioplasty and stenting (CAS) for ECA was performed to ensure adequate blood flow in the STA, due to the history of myocardial infarction and bifurcation of the common carotid artery at a high level (C2 level). (eurekamag.com)
  • Endarterectomy for cervical internal carotid artery stenosis. (mysciencework.com)
  • Endarterectomy for cervical internal carotid artery stenosis accompanied with severe aortic valve stenosis--case report]. (mysciencework.com)
  • First, the patient underwent left carotid endarterectomy, and the postoperative course was uneventful. (mysciencework.com)
  • Carotid endarterectomy rather than carotid artery stenting should be preceded for cervical carotid stenosis complicated with severe aortic valve stenosis. (mysciencework.com)
  • Stenting and secondary coiling of intracranial internal carotid artery aneurysm: technical case report. (nih.gov)
  • To investigate the correlation between tortuosity of extracranial internal carotid artery (EICA) and intraprocedural complications in patients undergoing carotid artery stenting (CAS). (karger.com)
  • Background: Siena carotid artery stenting (CAS) risk score is developed based on Chinese internal carotid artery (ICA) stenosis patients recruited in Italy, whether it is equally applicable in Chinese remains unknown. (medworm.com)
  • A left ascending pharyngeal artery with variant origin from the internal carotid artery helped maintain flow distal to the area of stenosis and allowed for safe and successful internal carotid artery stenting. (bmj.com)
  • Before (A to C) and after (D to F) carotid artery stenting (CAS) angiograms, showing restoration of antegrade cerebral flow. (onlinejacc.org)
  • E-mail: [email protected] We present a case of a traumatic skull base internal trauma and orthopedic surgery, at day 9 after his carotid artery (ICA) pseudoaneurysm treated with initial injury, the patient was loaded with aspirin and endovascular flow diversion stenting. (deepdyve.com)
  • To investigate the long-term results of preoperative stenting of the internal carotid artery (ICA) in complex head and neck paragangliomas (HNP) as well as to report on indications and technical details of the procedure. (figshare.com)
  • There are published algorithms for the use of stenting, coiling, and internal carotid artery (ICA) sacrifice for the treatment of pseudoaneurysms or active extravasation, however, there are no consensus guidelines [10] . (cureus.com)
  • Another surgery that may be done is carotid angioplasty and stenting. (denverhealth.org)
  • Imagistic findings (magnetic resonance imaging of the brain, and cervical spine, and magnetic resonance angiography of the head and neck) indicated a very rare condition: left internal carotid artery agenesis accompanied by the absence of the pre-communicant part of the left anterior cerebral artery and of the right posterior communicating artery. (bioportfolio.com)
  • Magnetic resonance angiography demonstrated a cerebral aneurysm originating from the bifurcation of the left internal carotid artery, which was considered to be responsible for the ICH. (biomedsearch.com)
  • Dr. Jovin's team, which consisted of members of the UPMC Stroke Institute , retrospectively studied 25 patients with acute carotid occlusion who underwent angiography with the intent to revascularize the occlusion from January 2002 to March 2005. (upmc.com)
  • Selective cerebral angiography in our department showed a left CCF filled only from the left internal carotid artery, initially considered as a spontaneous CCF type A (fig 1 A and B). As a variant there was a hypoplastic A1 segment on the left side with good collateralisation from the right side. (bmj.com)
  • A technique is presented for segmentation and quantification of stenosed internal carotid arteries in three-dimensional contrast-enhanced magnetic resonance angiography. (spie.org)
  • CT angiography is now the primary modality for correlation of carotid DUS with 85% of vascular laboratories using the NASCET methodology for analysis. (onlinejacc.org)
  • Further angiography of the right carotid artery revealed a pseudoaneurysm protruding from the petrosal ICA into the middle ear cavity. (koreamed.org)
  • The patient continues to be monitored regularly with clinical follow-up, and carotid angiography and temporal bone CT revealed no interval changes at the embolized site 3 years after the procedure. (koreamed.org)
  • Carotid artery was detected by computed tomography angiography, and cranial CT?MRI were performed. (cnki.com.cn)
  • Right carotid angiography showed right ICA occlusion and severe ipsilateral ECA stenosis. (eurekamag.com)
  • Computed tomographic angiography revealed a left internal carotid artery obstruction ( Figure 3B ). (alliedacademies.org)
  • After finishing the craniotomy, the patient was immediately transferred to the angiography suite and cerebral angiography was performed in order to evaluate the condition of intracranial internal carotid artery (ICA). (signavitae.com)
  • The cervical segment, or C1, or cervical part of the internal carotid, extends from the carotid bifurcation until it enters the carotid canal in the skull anterior to the jugular foramen. (wikipedia.org)
  • The internal carotid artery enters the skull and supplies the anterior part of the brain (via cerebral branches), the eye and its appendages, and sends branches to the forehead and nose. (innerbody.com)
  • Dural artery from the supraclinoid internal carotid artery to the anterior clinoid process: origin, course and clinical implications. (bioportfolio.com)
  • If the anterior clinoid process of the lesser wing of the sphenoid bone is pneumatized, there might be a deep recess (infraoptic recess) in the superior and lateral corner of the sphenoid sinus (Figure, A & B). (1,2) Such a recess can clearly separate the optic nerve from the internal carotid artery (Figure, A & B). If the anterior clinoid process is not pneumatized, the optic nerve is sometimes difficult to identify. (thefreelibrary.com)
  • Thus, the MCA territory is supplied by the intracavernous anastomosis, while the ACA territory is supplied via a patent anterior communicating artery. (appliedradiology.com)
  • After flow diverter placement, we saw thrombosis of the aneurysm including the PCA and the anterior cerebral artery (ACA), which completely resolved after the IA application of eptifibatide (Integrilin, GalxoSmithKline) and no ischemic complication occurred. (springer.com)
  • Blood blister-like aneurysms (BBAs) usually appear at the anteromedial or anterior wall of the supraclinoid segment of the internal carotid artery (ICA) [ 1 - 4 ]. (medsci.org)
  • Given the presence of good collateral flow through the anterior and posterior communicating arteries, the right ICA was sacrificed by coil embolization. (cureus.com)
  • OBJECTIVE Aneurysms at nonbranching sites in the supraclinoid internal carotid artery (ICA), known as blood blister-like aneurysms or ICA anterior or dorsal wall aneurysms, are not well understood. (semanticscholar.org)
  • The anterior communicating artery (ACoA) and ipsilateral posterior communicating artery (PCoA) functioned as the important collateral circulation channels when unilateral stenosis occurred. (ntu.edu.sg)
  • The blood flow of the anterior circulation and the total cerebral blood flow (CBF) reached to the minimum in the configuration of the contralateral proximal anterior cerebral artery (A1) absence coexisting with unilateral ICA stenosis. (ntu.edu.sg)
  • 4, Anterior Cerebral Arteries. (bookdome.com)
  • 15, Anterior Spinal Arteries conjoining in a single one. (bookdome.com)
  • Results show a significant narrowing of the distal ICA and anterior cerebral artery (ACA) in the Circle of Willis, as observed in humans. (paperity.org)
  • Note the pterion, a weak point of the skull, where the anterior middle meningeal artery is at risk of damage. (supakush.com)
  • Midbrain through anterior choroidal artery This means that even if one artery is damaged, blood flow is not compromised. (supakush.com)
  • Within the anterior portion of the canal, only thin bone separates the artery from the cochlea and the trigeminal ganglion. (supakush.com)
  • A major branch of the common carotid artery in the cervical (upper) spine, the internal carotid artery is one of a pair that run along each side of the neck and access the inside of the skull through an opening called the foramen lacerum.Once inside, this artery is closely associated with a number of important nerves and brain regions before breaking into the anterior and middle cerebral arteries. (bryanbishop.net)
  • Lateral projection of a left common carotid artery injection that displays the order of branching in the intracranial carotid, including 1: ophthalmic, 2: posterior communicating, 3: anterior choroidal, and 4: anterior cerebral arteries. (medscape.com)
  • The cavernous segment averages 39 mm in length and gives rise to far more branches, including the meningohypophyseal trunk, the anterior meningeal artery, the artery to the inferior portion of the cavernous sinus, and the ophthalmic artery. (medscape.com)
  • This gives rise to the superior hypophyseal perforators to the anterior pituitary and stalk, posterior communicating artery (PCoA), and anterior choroidal artery (AChA) before bifurcating into the ACA and MCA (see the image below). (medscape.com)
  • The 2 ACAs connect through the anterior communicating artery (ACoA), thus joining the left and right carotid circulations. (medscape.com)
  • The PCoA extends posteriorly to connect with the primary segment of the posterior cerebral artery (PCA), allowing collateral flow to pass between the anterior and posterior circulations. (medscape.com)
  • each of two arteries starting at the bifurcation of the common carotid arteries, opposite the cranial border of the thyroid cartilage, through which blood circulates to many structures and organs in the head. (thefreedictionary.com)
  • Sonograms from the supraorbital and common carotid arteries exhibit two peaks during cardiac systole (A and B). The post-operative A/B ratios were abnormal in 24 instances and these were associated with symptoms in seven. (ahajournals.org)
  • The internal carotid arteries (ICA) originate at the bifurcation of the left and right common carotid arteries, at the level of the fourth cervical vertebrae (C4). (supakush.com)
  • A case is descriptionbed of rupture of a congenital aneurysm of the internal carotid artery at the base of the skull in a 3-year-old child. (journals.co.za)
  • Cerebral embolism, due to a traumatic aneurysm of the internal carotid artery, and a duodenal tear occurred in a young woman who was wearing a seat belt at the time of a motor car accident. (trb.org)
  • Carotid stenosis is a narrowing or constriction of the inner surface (lumen) of the carotid artery, usually caused by atherosclerosis. (ebi.ac.uk)
  • Previous studies have identified a relationship between snoring, carotid intima media thickening, and the presence of atherosclerosis. (bioportfolio.com)
  • Objective: We sought to examine the differential impact of carotid atherosclerosis (CA) on the risk of major adverse coronary and cerebrovascular events. (dentisty.org)
  • Carotid artery stenosis is a narrowing or constriction of any part of the carotid arteries, usually caused by atherosclerosis. (wikipedia.org)
  • This fork is a common site for atherosclerosis, an inflammatory build-up of atheromatous plaque inside the common carotid artery, or the internal carotid arteries that causes them to narrow. (wikipedia.org)
  • Summary of Review- After a brief account of the anatomy of the WS and the cerebrovascular physiology in circumstances of low perfusion pressure, the literature concerning the mechanisms of WS infarction in carotid disease is reviewed and discussed with emphasis on imaging and ultrasound studies of the cerebral hemodynamics. (ahajournals.org)
  • We investigated this question in patients undergoing laparoscopic cholecystectomy, hypothesizing that cardiorespiratory changes during this procedure would reduce cerebral perfusion.Methods In a nonrandomized, observational study of 16 patients (American Society of Anesthesiologists physical status I or II) undergoing laparoscopic cholecystectomy, internal carotid artery blood velocity was measured by Doppler ultrasound at four time points: awake, after anesthesia induction, after induction of pneumoperitoneum, and after head-up tilt. (medworm.com)
  • Study of cellular changes induced by moderate cerebral ischemia achieved through internal carotid artery ligation. (curehunter.com)
  • Low risk of ischemic stroke in patients with reduced internal carotid artery lumen diameter distal to severe symptomatic carotid stenosis: cerebral protection due to low poststenotic flow? (deepdyve.com)
  • Objective To study the relationship between cerebral infarction and stenosis of extracranial internal carotid artery in patients with hypertension(HT) complicated with type 2 diabetes mellitus(DM). (cnki.com.cn)
  • The patients with severe stenosis of extracranial internal carotid artery were prone to develop cerebral infarction. (cnki.com.cn)
  • The stenosis of carotid artery is correlated with the incidence of cerebral infarction. (cnki.com.cn)
  • Horner's Syndrome Caused by Internal Carotid Artery Collapse after Clipping of an Internal Carotid-Posterior Cerebral Artery Aneurysm. (alliedacademies.org)
  • A 59-year-old woman presented with left blepharoptosis after clipping for treatment of subarachnoid hemorrhage from a ruptured internal carotid-posterior cerebral artery aneurysm. (alliedacademies.org)
  • Horner's syndrome, internal carotid-posterior cerebral artery aneurysm, aneurysmal clipping. (alliedacademies.org)
  • A 59-year-old woman suffered subarachnoid hemorrhage caused by the rupture of a left internal carotid-posterior cerebral artery (IC-PC) aneurysm in September 2007. (alliedacademies.org)
  • Although cerebral artery dissections are potentially fatal, there is still a lack of knowledge related to their natural history and adequate treatment options. (signavitae.com)
  • Results: With the development of stenosis in unilateral internal carotid artery (ICA), the cerebral blood supply decreased when the degree of stenosis increased. (ntu.edu.sg)
  • 6, Middle Cerebral Arteries. (bookdome.com)
  • 20, Posterior Cerebral Arteries. (bookdome.com)
  • The basilar artery terminates by bifurcating into the posterior cerebral arteries. (supakush.com)
  • In 1998 the international 'Terminologia Anatomica' announced that there are four segments to the artery, including the cervical segment, the petrous segment, the cavernous segment and the cerebral segment. (kenhub.com)
  • A 49-year-old woman presented with a dissecting pseudoaneurysm of the horizontal portion of the petrous internal carotid artery that increased in size, as revealed by serial angiographic studies. (nih.gov)
  • We report the case of a 66-year-old man who had significant otorrhagia caused by a ruptured pseudoaneurysm in the petrous internal carotid artery (ICA). (koreamed.org)
  • New flexible stents can be used to treat intracranial internal carotid artery aneurysms in difficult-to-access areas, such as the horizontal petrous segment. (nih.gov)
  • Among them, 22 had downward extent of the intracranial ICA reconstitution flow at or above the carotid siphon, eight at the carotid canal, and one at the distal cervical ICA, he said. (diagnosticimaging.com)
  • Based on the high prevalence of microembolic signals documented by ultrasound in symptomatic carotid disease, a recent hypothesis postulates that embolism and hypoperfusion play a synergetic role, according to which small embolic material prone to lodge in distal field arterioles would be more likely to result in cortical micro-infarcts when chronic hypoperfusion prevails. (ahajournals.org)
  • flow into the distal ICAs via the rete mirabile (transcranial anastomoses arising from the internal maxillary arteries). (appliedradiology.com)
  • Carotid near-occlusion is defined as severe stenosis of the internal carotid artery with partial or full collapse of the distal vessel wall. (ajnr.org)
  • The aneurysm originated from the distal side of the bifurcation of the left internal carotid artery and posterior communicating artery. (surgicalneurologyint.com)
  • I also was diagnosed with a brain aneurysm - 'originating from the left internal carotid artery just distal to the left ophthalmic origin. (mayoclinic.org)
  • However, in order to be able to compare the magnitude of hemodynamic variables between different aneurysms or groups of aneurysms (e.g. ruptured versus unruptured) it is necessary to scale the flow rates to the area of the inflow artery. (nih.gov)
  • Endovascular stents have been successfully used in the treatment of fusiform and dissecting aneurysms of the peripheral circulation and extracranial carotid and vertebral arteries. (nih.gov)
  • In addition, the stent acts as an endoluminal scaffold to prevent coil herniation into the parent artery, which allows tight packing of even wide-necked and irregularly shaped aneurysms. (nih.gov)
  • Intracavernous carotid artery aneurysms causing a carotid-cavernous fistula (CCF) are rare. (bmj.com)
  • Aneurysms of the intracavernous portion of the carotid artery causing a carotid-cavernous fistula (CCF) are not often described in the literature. (bmj.com)
  • Blood blister-like aneurysms (BBAs) are rare and usually appear at nonbranching sites in the supraclinoid portion of the internal carotid artery (ICA). (medsci.org)
  • In contrast to saccular aneurysms, these lesions show loss of the internal elastic lamina (IEL), vascular intima and media, sometimes appearing as only a fragile fibrous layer [ 2 , 3 , 6 , 18 - 20 ]. (medsci.org)
  • Saccular aneurysms of the extracranial internal carotid artery. (minervamedica.it)
  • The aim of this study was to describe the surgical technique employed and our results in the treatment of saccular aneurysms of the internal carotid artery at the extracranial level. (minervamedica.it)
  • We describe 3 cases of patients with saccular aneurysms of the extracranial internal carotid who underwent surgery at our unit within the last 3 years. (minervamedica.it)
  • Aneurysms at nonbranching sites in the surpaclinoid portion of the internal carotid artery: internal carotid artery trunk aneurysms. (semanticscholar.org)
  • Microsurgical versus Endovascular Treatments for Blood-Blister Aneurysms of the Internal Carotid Artery: A Retrospective Study of 83 Patients in a Single Center. (semanticscholar.org)
  • Abe and colleagues present an overview of blister aneurysms: Abe M, Tabuchi K, Yokoyama H, Uchino A. Blood blisterlike aneurysms of the internal carotid artery. (surgicalneurologyint.com)
  • Based on 6 cases, it seems to me, best and long lasting treatment option in blister-like aneurysms of the supraclinoid ICA in high grade SAH patients appears to be exclusion of the diseased segment of the artery by trapping only or trapping with bypass. (surgicalneurologyint.com)
  • Although it is well known that internal carotid-posterior communicating artery (ICA-PcomA) aneurysms compress the oculomotor nerve and cause nerve palsy, cases of ICA-PcomA aneurysms splitting the oculomotor nerve are extremely rare. (surgicalneurologyint.com)
  • It is well known that internal carotid-posterior communicating artery (ICA-PcomA) aneurysms compress the oculomotor nerve and cause nerve palsy, which is one of the important clinical signs of an ICA-PcomA aneurysm. (surgicalneurologyint.com)
  • I have 4-5 other aneurysms and tortuous artery areas, Connective Tissue Disease which causes the middle wall of arteries to relax, loose the collagen, elasticity and hopefully not burst. (mayoclinic.org)
  • The majority of concern regarding adverse incidents associated with cervical SMT involves the vertebral artery, although the internal carotid artery (ICA) has recently been proposed as another site of potential injury (5, 6). (researchreviewservice.com)
  • The findings of this study indicate there is less strain applied to the internal carotid artery during cervical SMT than during normal range of motion movements (remember, this study did not investigate forces on the vertebral artery ). (researchreviewservice.com)
  • This procedure was similar to that used previously by these authors in their investigation on the effects of cervical SMT on the vertebral artery (7). (researchreviewservice.com)
  • The white arrow indicates the right vertebral artery. (biomedcentral.com)
  • Superiorly, it converges with the left vertebral artery to form the basilar artery. (supakush.com)
  • This case shows the diagnosis and endovascular treatment of a posterior communicating artery aneurysm. (radiopaedia.org)
  • This part of the artery is known as the carotid sinus or the carotid bulb. (wikipedia.org)
  • This bifurcation occurs in an anatomical area known as the carotid triangle. (supakush.com)
  • The common carotid artery is contained in a sheath known as the carotid sheath, which is derived from the deep cervical fascia and encloses also the internal jugular vein and vagus nerve, the vein lying lateral to the artery, and the nerve between the artery and vein, on a plane posterior to both. (bryanbishop.net)
  • All patients who presented with unilateral or bilateral asymptomatic internal carotid artery stenosis of 50-69% on their first visit were included in this study and followed up until December 2011. (dit.ie)
  • Bilateral thrombosis of the internal carotid arteries after a closed trauma. (minervamedica.it)
  • Bilateral trau-mat-ic dis-sec-tion of an inter-nal carot-id -artery (-BTDIC) -after a -closed inju-ry is -very -rare. (minervamedica.it)
  • Fourteen patients were affected by tympanojugular paragangliomas, 4 by vagal paragangliomas and 1 by bilateral carotid body tumors. (figshare.com)
  • So she was observed until February 18, 1963, and then bilateral carotid and bilateral vertebral arteriograms were performed. (aanos.org)
  • A 75-year-old man, who had undergone coronary artery bypass graft and repair for abdominal aortic aneurysm, suffered from angina pectoris due to severe aortic valve stenosis complicated with asymptomatic bilateral cervical internal carotid artery stenoses. (mysciencework.com)
  • The internal carotid artery is a major paired artery, one on each side of the head and neck, in human anatomy. (wikipedia.org)
  • It is relatively superficial at its start, where it is contained in the carotid triangle of the neck, and lies behind and medial to the external carotid, overlapped by the sternocleidomastoid muscle, and covered by the deep fascia, the platysma, and integument: it then passes beneath the parotid gland, being crossed by the hypoglossal nerve, the digastric muscle and the stylohyoid muscle, the occipital artery and the posterior auricular artery. (wikipedia.org)
  • The carotid arteries have two sensory regions in the neck: the carotid sinus and the carotid body. (innerbody.com)
  • In human anatomy , the internal carotid artery is a major artery of the head and neck that helps supply blood to the brain . (wikidoc.org)
  • The internal carotid artery originates in the common carotid artery in the neck and ascends toward the brain. (thefreelibrary.com)
  • The frequent presence of an elongated carotid axis and an aneurysmal neck means the surgeon can easily restore arterial continuity by direct procedures. (minervamedica.it)
  • Just as a pulse can be felt in the wrists, a pulse can also be felt or heard on either side of the neck over the carotid arteries. (bryanbishop.net)
  • Carotid artery disease is the narrowing or blockage of the neck arteries that supply oxygen-rich blood to the brain. (bryanbishop.net)
  • These are a set of 2 arteries at the sides of your neck. (bryanbishop.net)
  • The carotid arteries are major arteries found on each side of the neck. (denverhealth.org)
  • We studied the extra cranial portion of the internal carotid artery and structures associated with it, which are vulnerable to iatrogenic injury during surgical approach to the neck region in 18 individuals. (ac.ke)
  • The common carotid artery is the large artery whose pulse can be felt on both sides of the neck under the jaw. (wikipedia.org)
  • The atherosclerotic plaque is the dark mass on the left Carotid artery stenosis is usually diagnosed by color flow duplex ultrasound scan of the carotid arteries in the neck. (wikipedia.org)
  • Branches of the two internal carotids and the basilar artery join at the base of the brain to form a ring of blood vessels called the circle of Willis. (innerbody.com)
  • We also found a tortuous right basilar artery (Fig. 2 d) cross the midline to the left. (biomedcentral.com)
  • 17, Basilar Artery formed by the union of the Vertebrals. (bookdome.com)
  • Within the cranial vault, some branches are given off: After this, the two vertebral arteries converge to form the basilar artery. (supakush.com)
  • Several branches from the basilar artery originate here, and go onto supply the cerebellum and pons. (supakush.com)
  • The vertebral arteries enter the cranium via the foramen magnum and converge to form the basilar artery - which continues to supply the brain. (supakush.com)
  • The vertebral arteriogram was completely normal, but the left carotid arteriograrn at that time revealed marked spasm and narrowing of the internal arteries just proximal to the cavernous portion. (aanos.org)
  • The aneurysm was treated by proximal carotid ligation. (trb.org)
  • In the vast majority of patients, the atherosclerotic lesions are located at the carotid bifurcation involving the very proximal segment of the internal carotid artery (ICA). (springer.com)
  • Here, we demonstrate a new surgical technique termed internal carotid artery stenosis (ICAS), to mimic MMS using micro-coils on the proximal ICA. (paperity.org)
  • This lateral view from an internal carotid artery angiogram demonstrates the origin of the ascending pharyngeal artery from the cervical internal carotid artery, which is an unusual but normal variant of angiographic anatomy. (sciencephoto.com)
  • Moreover, it commonly occurs at the cervical internal CA, and tCAD at the supraclinoid portion is quite rare. (signavitae.com)
  • Arterial tear in internal c. (adam.com)
  • The next four images demonstrate: normal blood flow in the left carotid artery, post-accident condition with a tear of the inner layer of the arterial wall, formation of a blood clot (thrombus) around the tear, and formation of embolus. (smartimagebase.com)
  • PURPOSE: There is little data on the effect of intra-arterial therapy (IAT) in acute cardioembolic internal carotid artery terminus (ICAT) occlusion that has poor prognosis. (koreamed.org)
  • a CTA and ( b ) DSA showing only the stenosis (white arrowhead) of right ICA, about 3.5 cm above the carotid bulb and 2.5 cm in length, the ( c ) MRA showing the right ICA stenosis as well as the surrounding hematoma (white asterisk) within the arterial wall. (biomedcentral.com)
  • This is an article covering the arteries of the brain, which supply the brain with arterial blood. (kenhub.com)
  • Internal carotid artery (ICA) agenesis is a rare developmental anomaly and is most frequently asymptomatic, but it may also present as cerebrovascular accidents. (dovepress.com)
  • Carotid revascularization procedures are performed for more than 87% of cases in patients with asymptomatic internal carotid stenosis (ICS), who are assumed to have a life expectancy of at. (bioportfolio.com)
  • 70%. The primary aim of the study is to determine if asymptomatic carotid artery disease causing a 50-69% internal carotid artery stenosis (ICAS) typically progressed to a >70% stenosis, thereby evaluating the necessity of annual Colour Duplex follow-up in patients presenting with a 50-69% stenosis. (dit.ie)
  • Asymptomatic Purpose To present our perioperative and long-term follow- restenosis was detected in seven patients (3.8 %) in the fol- up results of ICA NO patients treated with carotid artery low-up period. (deepdyve.com)
  • Two large randomized clinical trials have demonstrated that carotid surgery done with a 30-day stroke and death risk of 3% or less will benefit asymptomatic people with ≥60% stenosis who are expected to live at least 5 years after surgery. (wikipedia.org)
  • The internal carotid runs vertically upward in the carotid sheath, and enters the skull through the carotid canal. (wikipedia.org)
  • When the internal carotid artery enters the canal in the petrous portion of the temporal bone, it first ascends a short distance, then curves anteriorly and medially. (wikipedia.org)
  • When it passes through the carotid canal and the side of the body of the sphenoid bone, it has double curvature and looks like the italic letter S. (innerbody.com)
  • will goes into the carotid canal, which is located in the temporal bone's petrous portion. (innerbody.com)
  • The internal carotid runs perpendicularly upward in the carotid sheath , and enters the skull through the carotid canal . (wikidoc.org)
  • Such signs should prompt further diagnostic evaluation to demonstrate the presence of the agenesis of the carotid canal. (dovepress.com)
  • These structures include (1) the optic nerve and the internal carotid artery in the superolateral wall, (2) the posterior ethmoid cells in the anterosuperior wall (the Onodi cell), (3) the maxillary nerve in the lateral wall, and (4) the canal of the vidian nerve in the floor. (thefreelibrary.com)
  • The internal carotid artery enters the carotid canal in the petrous portion of the temporal bone. (thefreelibrary.com)
  • At the level of the skull base, the left internal carotid artery is absent (Figure 2A) and there is also absence of the left carotid canal (Figure 2B). (appliedradiology.com)
  • Under conscious sedation and systemic accident suffering multiple traumatic injuries including heparinization, the patient underwent endovascular a large skull base fracture that extended through the reconstruction of the large pseudoaneurysm using carotid canal. (deepdyve.com)
  • Interestingly, the perineural structure within the right hypoglossal canal seemed larger than that on the left side (Fig. 2 h and i), and a compressed, deformed internal jugular vein was observed (Fig. 2 f). (biomedcentral.com)
  • 11* portion of the internal carotid contained in the osseous canal must be carefully followed with a chisel, and its exact relation to the cochlea, tympanum, and Eustachian. (bookdome.com)
  • This portion gives rise to the caroticotympanic artery, supplying the tympanic cavity, and the pterygoid or vidian branch passing through the pterygoid canal. (medscape.com)
  • On occasion, the persistent stapedial branch of the petrous segment traverses a bony canal and continues as the middle meningeal artery. (medscape.com)
  • Compression of the internal carotid artery (ICA) in the cavernous sinus area is a rare event and is mostly associated with pituitary adenomas and meningiomas. (springer.com)
  • The cavernous portion of the internal carotid artery lies within the cavernous sinus. (thefreelibrary.com)
  • The artery lies adjacent to the sphenoid sinus during its passage through the cavernous sinus and produces a variable bulge in the lateral wall of the sphenoid sinus (Figure, B-D). (2) These variations can cause different patterns of bulges in the internal carotid arteries in the sphenoid sinus. (thefreelibrary.com)
  • article{Beena2007PseudoaneurysmOI, title={Pseudoaneurysm of internal carotid artery. (semanticscholar.org)
  • The segments are subdivided based on anatomical and microsurgical landmarks and surrounding anatomy, more than angiographic appearance of the artery. (wikipedia.org)
  • This nomenclature system is a clinical one, based on the angiographic appearance of the artery and its relationship to surrounding anatomy, in contrast to an embryologic classification system. (wikidoc.org)
  • An older clinical classification is based on work by Fischer in 1938 is also commonly used, as well as classification schemes based on the embryologic anatomy of the carotid artery. (wikidoc.org)
  • This section is from the book " Anatomy Of The Arteries Of The Human Body ", by John Hatch Power. (bookdome.com)
  • Internal Carotid Artery Anatomy - October 19, 2017 by luqman. (anatomyclass01.us)
  • Post tagged: cavernous internal carotid artery anatomy, internal carotid artery 3d anatomy, internal carotid artery anatomy, internal carotid artery anatomy angiogram, internal carotid artery anatomy branches, internal carotid artery anatomy pdf, internal carotid artery anatomy ppt, internal carotid artery anatomy radiology, internal carotid artery anatomy video, petrous internal carotid artery anatomy. (anatomyclass01.us)
  • Internal Carotid Artery Anatomy Internal Carotid Artery In Ear Human Anatomy Diagram. (anatomyclass01.us)
  • Carotid artery stenosis (CAS) is defined as the presence of significant narrowing of the arteries of the extracranial carotid system due to the presence of atherosclerotic plaque and affects up to 10% of people over 65 years (Goessens et al 2007). (dit.ie)
  • There were 729 respondents (729/2767, 26.3%) currently employed in a facility accredited in extracranial carotid testing (78.4% TD, 18.0% MD, 3.6% other role). (onlinejacc.org)
  • The purpose of this study is to determine the accuracy of a new non-invasive device, the Carotid Stenotic Scan (CSS), to check for stenosis of the internal carotid artery (ICA) as compared. (bioportfolio.com)
  • To examine the responses to early IV administration of an anticoagulant or placebo started within 24 hours of stroke among persons with an ipsilateral occlusion or severe stenosis of the internal carotid artery (ICA) identified by carotid duplex imaging. (neurology.org)
  • There have only been a few case reports in which occlusion of the internal carotid artery was associated with autoimmune disease, and no previous cases of internal carotid occlusion associated with Kimura's disease have been reported. (hindawi.com)
  • Pseudo-occlusion of the internal carotid artery. (biomedsearch.com)
  • Ultrasound tests demonstrated total occlusion of the internal carotid artery in 7 patients within the first post-operative week. (ahajournals.org)
  • Pieces of plaque can break off and block the small arteries above in the brain, which causes a stroke. (ebi.ac.uk)
  • Here we review the evidence regarding the mechanisms for WS stroke in carotid disease and whether they differ between cortical and internal WS infarcts. (ahajournals.org)
  • PITTSBURGH, November 21, 2005 - University of Pittsburgh researchers report a high level of effectiveness in re-opening completely blocked internal carotid arteries (ICA) as late as two to three days after acute stroke symptoms by using stents. (upmc.com)
  • Management of stroke because of acute internal carotid artery occlusion continues to represent a challenge because it may result in significant disability in 40 percent and death in 20 percent of cases," Dr. Jovin said. (upmc.com)
  • Introduction Symptomatic internal carotid artery occlusion (ICAO) can lead to neurologic decline, recurrent stroke, and mortality. (bmj.com)
  • Carotid artery disease can lead to a stroke due to a clot in the brain, also known as an ischaemic stroke. (bryanbishop.net)
  • The goal of treatment is to prevent carotid artery stenosis from causing inadequate blood flow to the brain or causing a stroke. (denverhealth.org)
  • citation needed] Clinically, risk of stroke from carotid artery stenosis is evaluated by the presence or absence of symptoms and the degree of stenosis on imaging. (wikipedia.org)
  • A piece of the formed blood clot often breaks off and travels (embolizes) up through the internal carotid artery into the brain, where it blocks circulation, and can cause death of the brain tissue, a condition referred to as ischemic stroke. (wikipedia.org)
  • The internal carotid artery (ICA) arises from the embryonic third aortic arch. (appliedradiology.com)
  • The carotid artery arises both directly and indirectly from the arch of the aorta , depending on which side of the body it belongs to. (kenhub.com)
  • The right common carotid artery arises indirectly, because it bifurcates from the first aortic branch which is the brachiocephalic artery, along with the right subclavian artery . (kenhub.com)
  • The left common carotid artery arises as the second aortic branch, with the left subclavian artery also originating directly from the aorta just to the left. (kenhub.com)
  • The internal carotid artery arises at the level between the third and fourth cervical vertebrae. (bryanbishop.net)
  • The ICA arises from the bifurcation of the common carotid artery, usually at the upper border of the thyroid cartilage. (bryanbishop.net)
  • The build-up of plaque in the internal carotid artery may lead to narrowing and irregularity of the artery's lumen, preventing proper blood flow to the brain. (medlineplus.gov)
  • The diagnosis was finally confirmed by a high-resolution MRI (HRMRI) scan of the responsible segment of the ICA, which showed considerable segmental narrowing with an enlarged artery lumen, combined with a "double cavity", intima tear, and haematoma within the vascular wall (Fig. 2 c, d and e). (biomedcentral.com)
  • The plaque build up can narrow or constrict the artery lumen, a condition called stenosis. (wikipedia.org)
  • These tests are similar to myocardial perfusion imaging with thallium-201, with which pharmacologic stress tests are used to diagnose coronary artery disease. (annals.org)
  • Presumably, many of the 533 patients who did not participate in this study because of a medical requirement for aspirin had manifest coronary artery disease. (annals.org)
  • Coronary artery bypass graf. (adam.com)
  • THE patient whose case I shall describe had a large aneurysmal tumor of the internal carotid artery. (aanos.org)
  • Aneurysmal rupture during clipping procedures could lead to extracranial internal carotid artery collapse and occlusion, causing ischemic damage to the sympathetic plexus. (alliedacademies.org)
  • 2, Ophthalmic Artery . (bookdome.com)
  • The ophthalmic segment (C6) contains the ophthalmic artery and the superior hypophyseal artery . (kenhub.com)
  • Only the left carotid artery, which arise… Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. (supakush.com)
  • The internal carotid artery (ICA) embryologically develops from the third primitive aortic arch. (medscape.com)
  • On the right side it starts from the brachiocephalic artery (a branch of the aorta), and on the left side the artery comes directly off the aortic arch. (wikipedia.org)
  • A further four patients developed severe occlusive disease in the contralateral internal carotid artery during the follow-up period, one of whom was symptomatic. (ahajournals.org)
  • the internal carotid artery supplies the brain, while the external carotid nourishes other portions of the head, such as face, scalp, skull, and meninges. (wikipedia.org)
  • The internal carotid artery supplies the brain. (ebi.ac.uk)
  • More commonly, as the narrowing worsens, pieces of plaque in the internal carotid artery can break free, travel to the brain and block blood vessels that supply blood to the brain. (medlineplus.gov)
  • In recent years, noninvasive functional perfusion imaging of the brain with carbon dioxide or acetazolamide challenge using single-photon emission computed tomography (SPECT) has been widely investigated for detecting substantial carotid disease and its functional effects on the brain [2-5] . (annals.org)
  • The internal carotid supplies blood to the main part of the brain ( CEREBRUM ) and associated structures, including the eye. (thefreedictionary.com)
  • Subdivision of common carotid artery, each instance of which supplies some brain. (bioontology.org)
  • In autopsy studies, CWS and IWS infarcts-also termed external and internal border-zone infarcts, respectively-together represent ≈10% of all brain infarcts. (ahajournals.org)
  • Incidental internal carotid artery (ICA) calcifications are occasionally noted on CT images of the brain and temporal bone. (ovid.com)
  • This artery may be exposed in the following manner: The brain should first be removed in the usual way, leaving uninjured, however, the cerebellum, medulla oblongata, and pons Varolii: the tentorium should now be removed, and the cerebellum pushed gently forward, or a small portion of its posterior part removed, so as to make room for the saw. (bookdome.com)
  • Arteries to the brain on magnetic resonance angiogram (MRA). (medscape.com)
  • At the base of the skull the glossopharyngeal, vagus, accessory, and hypoglossal nerves lie between the artery and the internal jugular vein. (wikipedia.org)
  • The circulation times through the middle menigeal artery were more or less identical with those in the superficial temporal arteries and unaffected by systolic blood pressure. (biomedsearch.com)
  • The former, superficial areas have been commonly referred to as the cortical watershed (CWS), and the latter have been referred to as the internal watershed (IWS). (ahajournals.org)
  • An aggregation of substance P (SP)- and calcitonin gene-related peptide (CGRP)-containing nerve cells (internal carotid mini-ganglion) is described at the junction between the greater superficial petrosal nerve and the internal carotid nerve close to the internal carotid artery. (lu.se)
  • Clinical Study to Evaluate the Safety and Effectiveness of MER® Stents in Carotid Revascularisation. (bioportfolio.com)
  • The aim of the study is to confirm, whether the MER® stent can be used, without limitations, for the endovascular carotid stenosis treatment in daily clinical practice. (bioportfolio.com)
  • The bulges produced by the optic nerve and the internal carotid artery are of considerable clinical importance (Figure). (thefreelibrary.com)
  • This is an article about the segments, branches and clinical aspects of the internal carotid arteries. (kenhub.com)
  • The posterior belly of digastric muscle and its attachments are key landmarks in identifying the internal carotid artery and thus avoiding injury to vital neurovascular structures which may help structures, which may help, improve clinical outcomes during surgery. (ac.ke)
  • Only patients with abnormal post-operative A/B ratios subsequently developed severe occlusive disease in the internal carotid artery during the follow-up assessment. (ahajournals.org)
  • Anatomical relationship between carotid artery and styloid and hyoid bones in patients showing unintended head rotation on CTA. (bioportfolio.com)
  • Researchers concluded that recanalization, or re-opening of the artery, was successful in 23 of the 25 patients, and that the procedure was done safely. (upmc.com)
  • The major studies evaluating carotid revascularization excluded patients with carotid near-occlusion. (ajnr.org)
  • To assess which features of transient monocular blindness (TMB) are associated with atherosclerotic changes in the ipsilateral internal carotid artery (ICA), 337 patients with sudden, transient monocular loss of vision were prospectively studied. (bmj.com)
  • As 17.3% of patients progressed to a >70% internal carotid artery stenosis over the course of the study it is evident that there was a significant rate of ICAS progression noted in this cohort of patients. (dit.ie)
  • Internal carotid artery (ICA) injury is the most dangerous and life-threatening complication in patients operated on due to parasellar tumors via a minimally invasive endoscopic endonasal approach. (termedia.pl)
  • dence of near occlusion (NO) of the internal carotid artery Results In 182 patients CAS were performed, 4 patients (ICA) is still controversial. (deepdyve.com)
  • The mean distances between the internal carotid arteries and nasopharyngeal subsites were significantly shortened in patients with nasopharyngeal internal carotid artery aberrancy, female gender, and lower body weight. (springermedizin.de)
  • In conclusion, from multiple linear regression analysis, we found that the risk of an internal carotid artery injury during simple nasopharyngeal surgeries with or without an endoscopic aid is greatest in adult patients with nasopharyngeal carotid artery aberrancy, followed by female gender, lower body weight, and increasing age. (springermedizin.de)
  • Results The percentage of patients with severe stenosis of extracranial internal carotid artery in patients with hypertension complicated with type 2 diabetes mellitus were significantly higher than that in patients with hypertension or DM. (cnki.com.cn)
  • The patients remain free from neurological symptoms with a patent carotid axis. (minervamedica.it)