Radiography of the vascular system of the brain after injection of a contrast medium.
Radiography of blood vessels after injection of a contrast medium.
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.
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.
Radiography of the vascular system of the heart muscle after injection of a contrast medium.
The arterial blood vessels supplying the CEREBRUM.
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)
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).
Bleeding into the intracranial or spinal SUBARACHNOID SPACE, most resulting from INTRACRANIAL ANEURYSM rupture. It can occur after traumatic injuries (SUBARACHNOID HEMORRHAGE, TRAUMATIC). Clinical features include HEADACHE; NAUSEA; VOMITING, nuchal rigidity, variable neurological deficits and reduced mental status.
Congenital vascular anomalies in the brain characterized by direct communication between an artery and a vein without passing through the CAPILLARIES. The locations and size of the shunts determine the symptoms including HEADACHES; SEIZURES; STROKE; INTRACRANIAL HEMORRHAGES; mass effect; and vascular steal effect.
Tomography using x-ray transmission and a computer algorithm to reconstruct the image.
The circulation of blood through the BLOOD VESSELS of the BRAIN.
Veins draining the cerebrum.
Large endothelium-lined venous channels situated between the two layers of DURA MATER, the endosteal and the meningeal layers. They are devoid of valves and are parts of the venous system of dura mater. Major cranial sinuses include a postero-superior group (such as superior sagittal, inferior sagittal, straight, transverse, and occipital) and an antero-inferior group (such as cavernous, petrosal, and basilar plexus).
A serotonin agonist that acts selectively at 5HT1 receptors. It is used in the treatment of MIGRAINE DISORDERS.
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.
Branch of the common carotid artery which supplies the anterior part of the brain, the eye and its appendages, the forehead and nose.
Bleeding into one or both CEREBRAL HEMISPHERES including the BASAL GANGLIA and the CEREBRAL CORTEX. It is often associated with HYPERTENSION and CRANIOCEREBRAL TRAUMA.
Artery formed by the bifurcation of the BASILAR ARTERY. Branches of the posterior cerebral artery supply portions of the OCCIPITAL LOBE; PARIETAL LOBE; inferior temporal gyrus, brainstem, and CHOROID PLEXUS.
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)
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.
In health care reimbursement, especially in the prospective payment system, those patients who require an unusually long hospital stay or whose stay generates unusually high costs.
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.
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.
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.
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.
Visualization of a vascular system after intravenous injection of a fluorescein solution. The images may be photographed or televised. It is used especially in studying the retinal and uveal vasculature.
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.
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.
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.
Constriction of arteries in the SKULL due to sudden, sharp, and often persistent smooth muscle contraction in blood vessels. Intracranial vasospasm results in reduced vessel lumen caliber, restricted blood flow to the brain, and BRAIN ISCHEMIA that may lead to hypoxic-ischemic brain injury (HYPOXIA-ISCHEMIA, BRAIN).
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.
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.
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.
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.
Artery formed by the bifurcation of the internal carotid artery (CAROTID ARTERY, INTERNAL). Branches of the anterior cerebral artery supply the CAUDATE NUCLEUS; INTERNAL CAPSULE; PUTAMEN; SEPTAL NUCLEI; GYRUS CINGULI; and surfaces of the FRONTAL LOBE and PARIETAL LOBE.
A heterogeneous group of nonprogressive motor disorders caused by chronic brain injuries that originate in the prenatal period, perinatal period, or first few years of life. The four major subtypes are spastic, athetoid, ataxic, and mixed cerebral palsy, with spastic forms being the most common. The motor disorder may range from difficulties with fine motor control to severe spasticity (see MUSCLE SPASTICITY) in all limbs. Spastic diplegia (Little disease) is the most common subtype, and is characterized by spasticity that is more prominent in the legs than in the arms. Pathologically, this condition may be associated with LEUKOMALACIA, PERIVENTRICULAR. (From Dev Med Child Neurol 1998 Aug;40(8):520-7)
Inflammation of blood vessels within the central nervous system. Primary vasculitis is usually caused by autoimmune or idiopathic factors, while secondary vasculitis is caused by existing disease process. Clinical manifestations are highly variable but include HEADACHE; SEIZURES; behavioral alterations; INTRACRANIAL HEMORRHAGES; TRANSIENT ISCHEMIC ATTACK; and BRAIN INFARCTION. (From Adams et al., Principles of Neurology, 6th ed, pp856-61)
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.
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.
Substances used to allow enhanced visualization of tissues.
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)
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.
Formation or presence of a blood clot (THROMBUS) in the CRANIAL SINUSES, large endothelium-lined venous channels situated within the SKULL. Intracranial sinuses, also called cranial venous sinuses, include the superior sagittal, cavernous, lateral, petrous sinuses, and many others. Cranial sinus thrombosis can lead to severe HEADACHE; SEIZURE; and other neurological defects.
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.
Total loss of vision in all or part of the visual field due to bilateral OCCIPITAL LOBE (i.e., VISUAL CORTEX) damage or dysfunction. Anton syndrome is characterized by the psychic denial of true, organic cortical blindness. (Adams et al., Principles of Neurology, 6th ed, p460)
Any operation on the cranium or incision into the cranium. (Dorland, 28th ed)
An abnormal direct communication between an artery and a vein without passing through the CAPILLARIES. An A-V fistula usually leads to the formation of a dilated sac-like connection, arteriovenous aneurysm. The locations and size of the shunts determine the degree of effects on the cardiovascular functions such as BLOOD PRESSURE and HEART RATE.
A generalized seizure disorder characterized by recurrent major motor seizures. The initial brief tonic phase is marked by trunk flexion followed by diffuse extension of the trunk and extremities. The clonic phase features rhythmic flexor contractions of the trunk and limbs, pupillary dilation, elevations of blood pressure and pulse, urinary incontinence, and tongue biting. This is followed by a profound state of depressed consciousness (post-ictal state) which gradually improves over minutes to hours. The disorder may be cryptogenic, familial, or symptomatic (caused by an identified disease process). (From Adams et al., Principles of Neurology, 6th ed, p329)
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.
Maintenance of blood flow to an organ despite obstruction of a principal vessel. Blood flow is maintained through small vessels.
Abnormal formation of blood vessels that shunt arterial blood directly into veins without passing through the CAPILLARIES. They usually are crooked, dilated, and with thick vessel walls. A common type is the congenital arteriovenous fistula. The lack of blood flow and oxygen in the capillaries can lead to tissue damage in the affected areas.
A value equal to the total volume flow divided by the cross-sectional area of the vascular bed.
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.
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.
Assessment of sensory and motor responses and reflexes that is used to determine impairment of the nervous system.
Surgery performed on the nervous system or its parts.
Accumulation of blood in the SUBDURAL SPACE between the DURA MATER and the arachnoidal layer of the MENINGES. This condition primarily occurs over the surface of a CEREBRAL HEMISPHERE, but may develop in the spinal canal (HEMATOMA, SUBDURAL, SPINAL). Subdural hematoma can be classified as the acute or the chronic form, with immediate or delayed symptom onset, respectively. Symptoms may include loss of consciousness, severe HEADACHE, and deteriorating mental status.
The compartment containing the inferior part and anterior extremities of the frontal lobes (FRONTAL LOBE) of the cerebral hemispheres. It is formed mainly by orbital parts of the FRONTAL BONE and the lesser wings of the SPHENOID BONE.
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.
The condition of an anatomical structure's being constricted beyond normal dimensions.
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)
An acquired or spontaneous abnormality in which there is communication between CAVERNOUS SINUS, a venous structure, and the CAROTID ARTERIES. It is often associated with HEAD TRAUMA, specifically basilar skull fractures (SKULL FRACTURE, BASILAR). Clinical signs often include VISION DISORDERS and INTRACRANIAL HYPERTENSION.
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.
An irregularly shaped venous space in the dura mater at either side of the sphenoid bone.
Splitting of the vessel wall in the VERTEBRAL ARTERY. Interstitial hemorrhage into the media of the vessel wall can lead to occlusion of the vertebral artery, aneurysm formation, or THROMBOEMBOLISM. Vertebral artery dissection is often associated with TRAUMA and injuries to the head-neck region but can occur spontaneously.
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.
A condition characterized by somnolence or coma in the presence of an acute infection with PLASMODIUM FALCIPARUM (and rarely other Plasmodium species). Initial clinical manifestations include HEADACHES; SEIZURES; and alterations of mentation followed by a rapid progression to COMA. Pathologic features include cerebral capillaries filled with parasitized erythrocytes and multiple small foci of cortical and subcortical necrosis. (From Adams et al., Principles of Neurology, 6th ed, p136)
Hand-held tools or implements used by health professionals for the performance of surgical tasks.
Arteries arising from the external carotid or the maxillary artery and distributing to the temporal region.
Accumulation of blood in the SUBDURAL SPACE over the CEREBRAL HEMISPHERE.
A profound state of unconsciousness associated with depressed cerebral activity from which the individual cannot be aroused. Coma generally occurs when there is dysfunction or injury involving both cerebral hemispheres or the brain stem RETICULAR FORMATION.
INFARCTION of the dorsolateral aspect of MEDULLA OBLONGATA in the BRAIN STEM. It is caused by occlusion of the VERTEBRAL ARTERY and/or the posterior inferior cerebellar artery. Clinical manifestations vary with the size of infarction, but may include loss of pain and temperature sensation in the ipsilateral face and contralateral body below the chin; ipsilateral HORNER SYNDROME; ipsilateral ATAXIA; DYSARTHRIA; VERTIGO; nausea, hiccup; dysphagia; and VOCAL CORD PARALYSIS. (From Adams et al., Principles of Neurology, 6th ed, p801)
The symptom of PAIN in the cranial region. It may be an isolated benign occurrence or manifestation of a wide variety of HEADACHE DISORDERS.
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.
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.
The measurement of visualization by radiation of any organ after a radionuclide has been injected into its blood supply. It is used to diagnose heart, liver, lung, and other diseases and to measure the function of those organs, except renography, for which RADIOISOTOPE RENOGRAPHY is available.
Bleeding within the SKULL, including hemorrhages in the brain and the three membranes of MENINGES. The escape of blood often leads to the formation of HEMATOMA in the cranial epidural, subdural, and subarachnoid spaces.
Aneurysm due to growth of microorganisms in the arterial wall, or infection arising within preexisting arteriosclerotic aneurysms.
A collection of blood outside the BLOOD VESSELS. Hematoma can be localized in an organ, space, or tissue.
Elements of limited time intervals, contributing to particular results or situations.
A spontaneous diminution or abatement of a disease over time, without formal treatment.
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.
Tear or break of an organ, vessel or other soft part of the body, occurring in the absence of external force.
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.
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 outermost of the three MENINGES, a fibrous membrane of connective tissue that covers the brain and the spinal cord.
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.
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.
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.
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)
Pathological processes of CORONARY ARTERIES that may derive from a congenital abnormality, atherosclerotic, or non-atherosclerotic cause.
A type of lung inflammation resulting from the aspiration of food, liquid, or gastric contents into the upper RESPIRATORY TRACT.
The excision of the thickened, atheromatous tunica intima of a carotid artery.
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.
Narrowing or constriction of a coronary artery.
Computed tomography where there is continuous X-ray exposure to the patient while being transported in a spiral or helical pattern through the beam of irradiation. This provides improved three-dimensional contrast and spatial resolution compared to conventional computed tomography, where data is obtained and computed from individual sequential exposures.
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 return of a sign, symptom, or disease after a remission.
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.
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.
A non-ionic, water-soluble contrast agent which is used in myelography, arthrography, nephroangiography, arteriography, and other radiological procedures.
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.
Types of spiral computed tomography technology in which multiple slices of data are acquired simultaneously improving the resolution over single slice acquisition technology.
Devices that provide support for tubular structures that are being anastomosed or for body cavities during skin grafting.
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.
The veins and arteries of the HEART.
An effective non-ionic, water-soluble contrast agent which is used in myelography, arthrography, nephroangiography, arteriography, and other radiographic procedures. Its low systemic toxicity is the combined result of low chemotoxicity and low osmolality.
Computer systems or networks designed to provide radiographic interpretive information.
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 method of computed tomography that uses radionuclides which emit a single photon of a given energy. The camera is rotated 180 or 360 degrees around the patient to capture images at multiple positions along the arc. The computer is then used to reconstruct the transaxial, sagittal, and coronal images from the 3-dimensional distribution of radionuclides in the organ. The advantages of SPECT are that it can be used to observe biochemical and physiological processes as well as size and volume of the organ. The disadvantage is that, unlike positron-emission tomography where the positron-electron annihilation results in the emission of 2 photons at 180 degrees from each other, SPECT requires physical collimation to line up the photons, which results in the loss of many available photons and hence degrades the image.
Neoplasms of the intracranial components of the central nervous system, including the cerebral hemispheres, basal ganglia, hypothalamus, thalamus, brain stem, and cerebellum. Brain neoplasms are subdivided into primary (originating from brain tissue) and secondary (i.e., metastatic) forms. Primary neoplasms are subdivided into benign and malignant forms. In general, brain tumors may also be classified by age of onset, histologic type, or presenting location in the brain.
A tricarbocyanine dye that is used diagnostically in liver function tests and to determine blood volume and cardiac output.
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).
Increased intracellular or extracellular fluid in brain tissue. Cytotoxic brain edema (swelling due to increased intracellular fluid) is indicative of a disturbance in cell metabolism, and is commonly associated with hypoxic or ischemic injuries (see HYPOXIA, BRAIN). An increase in extracellular fluid may be caused by increased brain capillary permeability (vasogenic edema), an osmotic gradient, local blockages in interstitial fluid pathways, or by obstruction of CSF flow (e.g., obstructive HYDROCEPHALUS). (From Childs Nerv Syst 1992 Sep; 8(6):301-6)
A heterogeneous group of sporadic or familial disorders characterized by AMYLOID deposits in the walls of small and medium sized blood vessels of CEREBRAL CORTEX and MENINGES. Clinical features include multiple, small lobar CEREBRAL HEMORRHAGE; cerebral ischemia (BRAIN ISCHEMIA); and CEREBRAL INFARCTION. Cerebral amyloid angiopathy is unrelated to generalized AMYLOIDOSIS. Amyloidogenic peptides in this condition are nearly always the same ones found in ALZHEIMER DISEASE. (from Kumar: Robbins and Cotran: Pathologic Basis of Disease, 7th ed., 2005)
Four CSF-filled (see CEREBROSPINAL FLUID) cavities within the cerebral hemispheres (LATERAL VENTRICLES), in the midline (THIRD VENTRICLE) and within the PONS and MEDULLA OBLONGATA (FOURTH VENTRICLE).
Levels within a diagnostic group which are established by various measurement criteria applied to the seriousness of a patient's disorder.
Improvement in the quality of an x-ray image by use of an intensifying screen, tube, or filter and by optimum exposure techniques. Digital processing methods are often employed.
Pathologic conditions affecting the BRAIN, which is composed of the intracranial components of the CENTRAL NERVOUS SYSTEM. This includes (but is not limited to) the CEREBRAL CORTEX; intracranial white matter; BASAL GANGLIA; THALAMUS; HYPOTHALAMUS; BRAIN STEM; and CEREBELLUM.
The use of ultrasound to guide minimally invasive surgical procedures such as needle ASPIRATION BIOPSY; DRAINAGE; etc. Its widest application is intravascular ultrasound imaging but it is useful also in urology and intra-abdominal conditions.
The flow of BLOOD through or around an organ or region of the body.
Studies to determine the advantages or disadvantages, practicability, or capability of accomplishing a projected plan, study, or project.
Formation or presence of a blood clot (THROMBUS) in a blood vessel within the SKULL. Intracranial thrombosis can lead to thrombotic occlusions and BRAIN INFARCTION. The majority of the thrombotic occlusions are associated with ATHEROSCLEROSIS.
Improvement of the quality of a picture by various techniques, including computer processing, digital filtering, echocardiographic techniques, light and ultrastructural MICROSCOPY, fluorescence spectrometry and microscopy, scintigraphy, and in vitro image processing at the molecular level.
Dominance of one cerebral hemisphere over the other in cerebral functions.
Dilation of an occluded coronary artery (or arteries) by means of a balloon catheter to restore myocardial blood supply.
NECROSIS of the MYOCARDIUM caused by an obstruction of the blood supply to the heart (CORONARY CIRCULATION).
Pressure within the cranial cavity. It is influenced by brain mass, the circulatory system, CSF dynamics, and skull rigidity.
Recording of the moment-to-moment electromotive forces of the HEART as projected onto various sites on the body's surface, delineated as a scalar function of time. The recording is monitored by a tracing on slow moving chart paper or by observing it on a cardioscope, which is a CATHODE RAY TUBE DISPLAY.
The concave interior of the eye, consisting of the retina, the choroid, the sclera, the optic disk, and blood vessels, seen by means of the ophthalmoscope. (Cline et al., Dictionary of Visual Science, 4th ed)
A complex of gadolinium with a chelating agent, diethylenetriamine penta-acetic acid (DTPA see PENTETIC ACID), that is given to enhance the image in cranial and spinal MRIs. (From Martindale, The Extra Pharmacopoeia, 30th ed, p706)
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.
Delivery of drugs into an artery.
The number of new cases of a given disease during a given period in a specified population. It also is used for the rate at which new events occur in a defined population. It is differentiated from PREVALENCE, which refers to all cases, new or old, in the population at a given time.
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 amount of radiation energy that is deposited in a unit mass of material, such as tissues of plants or animal. In RADIOTHERAPY, radiation dosage is expressed in gray units (Gy). In RADIOLOGIC HEALTH, the dosage is expressed by the product of absorbed dose (Gy) and quality factor (a function of linear energy transfer), and is called radiation dose equivalent in sievert units (Sv).
Radiographic visualization of the aorta and its branches by injection of contrast media, using percutaneous puncture or catheterization procedures.
Diagnostic and therapeutic procedures that are invasive or surgical in nature, and require the expertise of a specially trained radiologist. In general, they are more invasive than diagnostic imaging but less invasive than major surgery. They often involve catheterization, fluoroscopy, or computed tomography. Some examples include percutaneous transhepatic cholangiography, percutaneous transthoracic biopsy, balloon angioplasty, and arterial embolization.
Triiodo-substituted derivatives of BENZOIC ACID.
The degree to which BLOOD VESSELS are not blocked or obstructed.
Procedures in which placement of CARDIAC CATHETERS is performed for therapeutic or diagnostic procedures.
Disease having a short and relatively severe course.
The symptom of paroxysmal pain consequent to MYOCARDIAL ISCHEMIA usually of distinctive character, location and radiation. It is thought to be provoked by a transient stressful situation during which the oxygen requirements of the MYOCARDIUM exceed that supplied by the CORONARY CIRCULATION.
Unstable isotopes of xenon that decay or disintegrate emitting radiation. Xe atoms with atomic weights 121-123, 125, 127, 133, 135, 137-145 are radioactive xenon isotopes.
Derived from TELENCEPHALON, cerebrum is composed of a right and a left hemisphere. Each contains an outer cerebral cortex and a subcortical basal ganglia. The cerebrum includes all parts within the skull except the MEDULLA OBLONGATA, the PONS, and the CEREBELLUM. Cerebral functions include sensorimotor, emotional, and intellectual activities.
Tomography using radioactive emissions from injected RADIONUCLIDES and computer ALGORITHMS to reconstruct an image.
PRESSURE of the BLOOD on the ARTERIES and other BLOOD VESSELS.
Tissue NECROSIS in any area of the brain, including the CEREBRAL HEMISPHERES, the CEREBELLUM, and the BRAIN STEM. Brain infarction is the result of a cascade of events initiated by inadequate blood flow through the brain that is followed by HYPOXIA and HYPOGLYCEMIA in brain tissue. Damage may be temporary, permanent, selective or pan-necrosis.
The movement and the forces involved in the movement of the blood through the CARDIOVASCULAR SYSTEM.
The escape of diagnostic or therapeutic material from the vessel into which it is introduced into the surrounding tissue or body cavity.
Pressure, burning, or numbness in the chest.
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.
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)
Any visible result of a procedure which is caused by the procedure itself and not by the entity being analyzed. Common examples include histological structures introduced by tissue processing, radiographic images of structures that are not naturally present in living tissue, and products of chemical reactions that occur during analysis.
Restoration of blood supply to tissue which is ischemic due to decrease in normal blood supply. The decrease may result from any source including atherosclerotic obstruction, narrowing of the artery, or surgical clamping. It is primarily a procedure for treating infarction or other ischemia, by enabling viable ischemic tissue to recover, thus limiting further necrosis. However, it is thought that reperfusion can itself further damage the ischemic tissue, causing REPERFUSION INJURY.
The innermost layer of the three meninges covering the brain and spinal cord. It is the fine vascular membrane that lies under the ARACHNOID and the DURA MATER.
Motion pictures of the passage of contrast medium through blood vessels.
The circulation of blood through the CORONARY VESSELS of the HEART.
Methods developed to aid in the interpretation of ultrasound, radiographic images, etc., for diagnosis of disease.
The creation and display of functional images showing where the blood is flowing into the MYOCARDIUM by following over time the distribution of tracers injected into the blood stream.
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.
A reduction in brain oxygen supply due to ANOXEMIA (a reduced amount of oxygen being carried in the blood by HEMOGLOBIN), or to a restriction of the blood supply to the brain, or both. Severe hypoxia is referred to as anoxia, and is a relatively common cause of injury to the central nervous system. Prolonged brain anoxia may lead to BRAIN DEATH or a PERSISTENT VEGETATIVE STATE. Histologically, this condition is characterized by neuronal loss which is most prominent in the HIPPOCAMPUS; GLOBUS PALLIDUS; CEREBELLUM; and inferior olives.
A colorless, odorless gas that can be formed by the body and is necessary for the respiration cycle of plants and animals.
The vessels carrying blood away from the heart.
Radiography of the heart and great vessels after injection of a contrast medium.
An element with atomic symbol O, atomic number 8, and atomic weight [15.99903; 15.99977]. It is the most abundant element on earth and essential for respiration.
A noninvasive technique that uses the differential absorption properties of hemoglobin and myoglobin to evaluate tissue oxygenation and indirectly can measure regional hemodynamics and blood flow. Near-infrared light (NIR) can propagate through tissues and at particular wavelengths is differentially absorbed by oxygenated vs. deoxygenated forms of hemoglobin and myoglobin. Illumination of intact tissue with NIR allows qualitative assessment of changes in the tissue concentration of these molecules. The analysis is also used to determine body composition.
Drugs intended to prevent damage to the brain or spinal cord from ischemia, stroke, convulsions, or trauma. Some must be administered before the event, but others may be effective for some time after. They act by a variety of mechanisms, but often directly or indirectly minimize the damage produced by endogenous excitatory amino acids.
A branch of the abdominal aorta which supplies the kidneys, adrenal glands and ureters.
Blocking of the PULMONARY ARTERY or one of its branches by an EMBOLUS.
The ratio of maximum blood flow to the MYOCARDIUM with CORONARY STENOSIS present, to the maximum equivalent blood flow without stenosis. The measurement is commonly used to verify borderline stenosis of CORONARY ARTERIES.
The restoration of blood supply to the myocardium. (From Dorland, 28th ed)
A component of the B-cell antigen receptor that is involved in B-cell antigen receptor heavy chain transport to the PLASMA MEMBRANE. It is expressed almost exclusively in B-LYMPHOCYTES and serves as a useful marker for B-cell NEOPLASMS.
Branch of the common carotid artery which supplies the exterior of the head, the face, and the greater part of the neck.
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 arterial trunk that arises from the abdominal aorta and after a short course divides into the left gastric, common hepatic and splenic arteries.
Timing the acquisition of imaging data to specific points in the cardiac cycle to minimize image blurring and other motion artifacts.
Malformations of CORONARY VESSELS, either arteries or veins. Included are anomalous origins of coronary arteries; ARTERIOVENOUS FISTULA; CORONARY ANEURYSM; MYOCARDIAL BRIDGING; and others.
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.
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.
Gadolinium. An element of the rare earth family of metals. It has the atomic symbol Gd, atomic number 64, and atomic weight 157.25. Its oxide is used in the control rods of some nuclear reactors.
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.
Use of infusions of FIBRINOLYTIC AGENTS to destroy or dissolve thrombi in blood vessels or bypass grafts.
The circulation of the BLOOD through the MICROVASCULAR NETWORK.
The creation and display of functional images showing where the blood flow reaches by following the distribution of tracers injected into the blood stream.
A prediction of the probable outcome of a disease based on a individual's condition and the usual course of the disease as seen in similar situations.
Specialized non-fenestrated tightly-joined ENDOTHELIAL CELLS with TIGHT JUNCTIONS that form a transport barrier for certain substances between the cerebral capillaries and the BRAIN tissue.
Combination or superimposition of two images for demonstrating differences between them (e.g., radiograph with contrast vs. one without, radionuclide images using different radionuclides, radiograph vs. radionuclide image) and in the preparation of audiovisual materials (e.g., offsetting identical images, coloring of vessels in angiograms).
Pathologic deposition of calcium salts in tissues.
Care given during the period prior to undergoing surgery when psychological and physical preparations are made according to the special needs of the individual patient. This period spans the time between admission to the hospital to the time the surgery begins. (From Dictionary of Health Services Management, 2d ed)
Obstruction of flow in biological or prosthetic vascular grafts.
One of the CARBONIC ANHYDRASE INHIBITORS that is sometimes effective against absence seizures. It is sometimes useful also as an adjunct in the treatment of tonic-clonic, myoclonic, and atonic seizures, particularly in women whose seizures occur or are exacerbated at specific times in the menstrual cycle. However, its usefulness is transient often because of rapid development of tolerance. Its antiepileptic effect may be due to its inhibitory effect on brain carbonic anhydrase, which leads to an increased transneuronal chloride gradient, increased chloride current, and increased inhibition. (From Smith and Reynard, Textbook of Pharmacology, 1991, p337)
The first artificially produced element and a radioactive fission product of URANIUM. Technetium has the atomic symbol Tc, atomic number 43, and atomic weight 98.91. All technetium isotopes are radioactive. Technetium 99m (m=metastable) which is the decay product of Molybdenum 99, has a half-life of about 6 hours and is used diagnostically as a radioactive imaging agent. Technetium 99 which is a decay product of technetium 99m, has a half-life of 210,000 years.
Abnormal balloon- or sac-like dilatation in the wall of CORONARY VESSELS. Most coronary aneurysms are due to CORONARY ATHEROSCLEROSIS, and the rest are due to inflammatory diseases, such as KAWASAKI DISEASE.
A gamma-emitting RADIONUCLIDE IMAGING agent used in the evaluation of regional cerebral blood flow and in non-invasive dynamic biodistribution studies and MYOCARDIAL PERFUSION IMAGING. It has also been used to label leukocytes in the investigation of INFLAMMATORY BOWEL DISEASES.
Organic compounds that contain technetium as an integral part of the molecule. These compounds are often used as radionuclide imaging agents.
Drugs used to cause dilation of the blood vessels.
Controlled physical activity which is performed in order to allow assessment of physiological functions, particularly cardiovascular and pulmonary, but also aerobic capacity. Maximal (most intense) exercise is usually required but submaximal exercise is also used.
The main artery of the thigh, a continuation of the external iliac artery.
Radiographic visualization or recording of a vein after the injection of contrast medium.
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).

Intracranial arteriovenous malformations. Observations after experience with computerised tomography. (1/3177)

Thirty-six patients with angiographically confirmed intracranial arteriovenous malformations have had computerised tomographic scans performed as part of their investigation. This study demonstrates the incidence of haematoma formation after haemorrhage, the frequency of calcification not visible on plain radiographs, and describes the possible causes for a complicating hydrocephalus. Further information has been gained from the intravenous injection of sodium iothalamate (Conray 420), with comparison of the scans taken before and after the injection.  (+info)

Computerised axial tomography in patients with severe migraine: a preliminary report. (2/3177)

Patients suffering from severe migraine, usually for many years, have been examined by the EMI scanner between attacks. Judged by criteria validated originally by comparison with pneumoencephalography, about half of the patients showed evidence of cerebral atrophy. Perhaps of more significance than generalised atrophy was the frequency of areas of focal atrophy and of evidence of infarction.  (+info)

Two similar cases of encephalopathy, possibly a reversible posterior leukoencephalopathy syndrome: serial findings of magnetic resonance imaging, SPECT and angiography. (3/3177)

Two young women who had encephalopathy that resembled reversible posterior leukoencephalopathy syndrome are presented. The brain magnetic resonance imaging (MRI) of these patients exhibited similar T2-high signal lesions, mostly in the white matter of the posterior hemispheres. Xe-SPECT during the patients' symptomatic period showed hypoperfusion in the corresponding areas, and angiography demonstrated irregular narrowing of the posterior cerebral artery. Clinical manifestations subsided soon after treatment, and the abnormal radiological findings also were almost completely resolved. Thus, we concluded that transient hypoperfusion followed by ischemia and cytotoxic edema might have had a pivotal role in these cases.  (+info)

Large and giant middle to lower basilar trunk aneurysms treated by surgical and interventional neuroradiological methods. (4/3177)

Treatment of large and giant aneurysms of the basilar artery remains difficult and controversial. Three large or giant aneurysms of the lower basilar artery were treated with a combination of surgical and interventional neuroradiological procedures. All patients underwent the balloon occlusion test with hypotensive challenge (blood pressure reduced to 70% of the control value). The third patient did not tolerate the test. In the first patient, both vertebral arteries were occluded through a craniotomy. In the second patient, both the aneurysm and the basilar artery were occluded by detached balloons. In the third patient, one vertebral artery was occluded by surgical clipping and the other by detached helical coils and fiber coils. In spite of anti-coagulation and anti-platelet therapy, postoperative thrombotic or embolic ischemia occurred in the second and third patients. Fibrinolytic therapy promptly corrected the ischemic symptoms, but the second patient developed hemorrhagic complications at the craniotomy area 2 hours later. At follow-up examination, the first patient had only 8th cranial nerve paresis, the second patient who had a hemorrhagic complication was bed-ridden, and the third patient had no deficit. Interventional occlusion requires a longer segment of the parent artery compared to surgical occlusion of the parent artery and might cause occlusion of the perforating arteries. However, selected use of various coils can occlude only a short segment of the parent artery. Thus, the postoperative management of thromboembolic ischemia after the occlusion of the parent artery is easier using the interventional technique.  (+info)

Combined carotid endarterectomy and coronary artery bypass graft. (5/3177)

Atherosclerosis is a generalized disease which afflicts a considerable number of patients in both the carotid and coronary arteries. Although the risk of stroke or death use to combined carotid endarterectomy (CEA) and coronary artery bypass graft (CABG) is thought to be higher than that of each individual operation, the combined procedure is generally preferred over staged operations to treat such patients. We performed the combined procedure safely with the aid of intraoperative portable digital subtraction angiography (DSA). This report describes our experience with the operative strategy of simultaneous CEA and CABG. Ninety CEA and 404 CABG were carried out between January 1989 and December 1997. A total of six patients received the combined procedure with the aid of intraoperative DSA; they were studied retrospectively. Postoperative mortality and morbidity after the combined procedure was 0%. In the combined procedure, neurological complications are difficult to detect after CEA because the patient must be maintained under general anesthesia and extracorporeal circulation during the subsequent CABG. However, intraoperative DSA can confirm patency of the internal carotid artery and absence of flap formation after CEA, and the CABG can be performed safely. Intraoperative portable DSA between CEA and CABG is helpful in preventing perioperative stroke in the combined procedure.  (+info)

Angiographical extravasation of contrast medium in hemorrhagic infarction. Case report. (6/3177)

Leakage of the contrast medium was noted on angiograms of a patient whose autopsied brain disclosed typical pathological findings of hemorrhagic infarction. The case was a 63-year old woman with mitral valve failure, who suddenly had loss of consciousness and right-sided hemiplegia. The left carotid angiography performed six hours after onset demonstrated middle cerebral arterial axis occlusion, and the second angiography performed three days after onset displayed recanalization of the initially occluded artery as well as extravasation of the contrast medium. Fourteen days after onset the patient died and an autopsy was performed. The brain demonstrated perivascular punctate hemorrhages in the area supplied by the middle cerebral artery, and neither hematoma nor microaneurysm was disclosed pathologically. A short discussion is given on the possible relationship between recanalization and hemorrhagic infarction. The clinical assessment of hemorrhagic infarction has not been established successfully.  (+info)

Carotid endarterectomy and intracranial thrombolysis: simultaneous and staged procedures in ischemic stroke. (7/3177)

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)

Surgical treatment of internal carotid artery anterior wall aneurysm with extravasation during angiography--case report. (8/3177)

A 54-year-old female presented subarachnoid hemorrhage from an aneurysm arising from the anterior (dorsal) wall of the internal carotid artery (ICA). During four-vessel angiography, an extravasated saccular pooling of contrast medium emerged in the suprasellar area unrelated to any arterial branch. The saccular pooling was visualized in the arterial phase and cleared in the venophase during every contrast medium injection. We suspected that the extravasated pooling was surrounded by hard clot but communicated with the artery. Direct surgery was performed but major premature bleeding occurred during the microsurgical procedure. After temporary clipping, an opening of the anterior (dorsal) wall of the ICA was found without apparent aneurysm wall. The vessel wall was sutured with nylon thread. The total occlusion time of the ICA was about 50 minutes. Follow-up angiography demonstrated good patency of the ICA. About 2 years after the operation, the patient was able to walk with a stick and to communicate freely through speech, although left hemiparesis and left homonymous hemianopsia persisted. The outcome suggests our treatment strategy was not optimal, but suture of the ICA wall is one of the therapeutic choices when premature rupture occurs in the operation.  (+info)

TY - JOUR. T1 - Arterial dissections complicating cerebral angiography and cerebrovascular interventions. AU - Cloft, Harry J.. AU - Jensen, Mary E.. AU - Kallmes, David F. AU - Dion, Jacques E.. PY - 2000. Y1 - 2000. N2 - BACKGROUND AND PURPOSE: Iatrogenic dissections are an uncommon complication of cerebral angiography. We retrospectively reviewed 12 cases of arterial dissections complicating cerebral angiography and cerebrovascular interventions to evaluate the clinical course of these dissections. METHODS: Cases from a large tertiary center performing a large number of neurovascular procedures were collected retrospectively. The patients medical records and imaging studies were reviewed, with particular attention given to the cause of the dissection, the development of ischemic events resulting from the dissection, and the treatment used. RESULTS: Each of nine dissections affected a vertebral artery, each of two affected an internal carotid artery, and one affected a common carotid artery. ...
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This revised and enlarged edition of Cerebral Angiography, which includes new angiographic studies and illustrative drawings, offers detailed guidance on diagnostic use of the procedure. The first part of the book describes the normal anatomy of the cerebral arteries and veins, with attention to mor.... Full description. ...
This revised and enlarged edition of Cerebral Angiography, which includes new angiographic studies and illustrative drawings, offers detailed guidance on diagnostic use of the procedure. The first par
There have been many reports of changes in hemodynamic status or cognitive function after CAS; however, few report the morphologic changes in intracranial vasculature after CAS. Morphologic changes of the intracranial artery were noted immediately after CAS in patients with NTO, and smooth vascular narrowing was observed. In our study, all the patients with vasoconstriction were asymptomatic, which indicated that these morphologic changes in the intracranial vasculature are physiologic responses to increased cerebral perfusion, which is a type of autoregulation.. Cerebral autoregulation is a homeostatic process that regulates and maintains constant CBF in a range of blood pressures. In healthy adults, CBF is constantly maintained between 50 and 150 mm Hg cerebral perfusion pressure (CPP). The vascular adjustments that underlie autoregulation consist of constriction of cerebral resistance vessels when CPP increases and vasodilation of these vessels when CPP decreases.14 However, during cerebral ...
You had a procedure called cerebral angiography. This is an X-ray study of the blood vessels that supply your brain. Heres what to do at home afterward.
You had a procedure called cerebral angiography. This is an X-ray study of the blood vessels that supply your brain. Heres what to do at home afterward.
You had a procedure called cerebral angiography. This is an X-ray study of the blood vessels that supply your brain. Heres what to do at home afterward.
TY - CHAP. T1 - Cerebral angiography in pediatrics. AU - Scotti, G.. AU - Pieralli, S.. AU - Righi, C.. AU - Triulzi, F.. AU - Visciani, A.. PY - 1989. Y1 - 1989. UR - http://www.scopus.com/inward/record.url?scp=0024576981&partnerID=8YFLogxK. UR - http://www.scopus.com/inward/citedby.url?scp=0024576981&partnerID=8YFLogxK. M3 - Chapter. AN - SCOPUS:0024576981. VL - 1. SP - 257. EP - 263. BT - Rivista di Neuroradiologia. ER - ...
Searching for Global Cerebral Angiography Market 2020 Business Opportunities - Siemens Healthineers (Germany), TERUMO Corporation (Japan) . We got you covered at iCrowdNewswire
Even in challenging cases, CT angiography offers an accurate and rapid diagnosis for blunt trauma victims who may have aortic or great vessel injury negating the need for more invasive procedures, according to a recent study conducted by radiologists at the University of Washington and the Harborview Injury Prevention and Research Center in Seattle. CTA is commonly used to rule out blunt aortic and intrathoracic great vessel injuries, but sometimes the results are indeterminate, said Marla Sammer, M.D., lead author of the study.
Color enhanced medicine radiology angiography showing normal blood vessels in the brain. (Enhancement of GA3404) - Stock Image C003/4771
Hi all-- Can you please comment to help me confirm the appropriate 36000 series for this given cerebral angiogram scenario? Patient is normal arch art
RiTradiology.com ดูแลรักษาโดยและเป็นของ น.พ.รัฐชัย แก้วลาย. โลโก้ RiTradiology.com เป็นลิขสิทธิ์ของ น.พ.รัฐชัย แก้วลาย. ข้อมูลส่วนตัวของคุณถือเป็นความลับและจะไม่ถูกเผยแพร่ไปยังบุคคลที่สาม. ข้อมูลใน RiTradiology.com ใช้เป็นแนวทาง, ไม่ใช่เพื่อทดแทน, การให้การวินิจฉัย, รักษาและคำแนะนำสำหรับผู้ป่วย. แพทย์ของคุณอาจให้คำแนะนำในการวินิจฉัยหรือรักษาเป็นอย่างอื่นขึ้นกับข้อมูลและสถานการณ์นั้นๆ. ...
Discussion about Improvement of Stability of the Scan Timing by Placing Small ROI in Cerebral 3D-CTA. . Biblioteca virtual para leer y descargar libros, documentos, trabajos y tesis universitarias en PDF. Material universiario, documentación y tareas realizadas por universitarios en nuestra biblioteca. Para descargar gratis y para leer online.
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Background and Purpose-Detection of acute infarction in the posterior circulation is challenging. We aimed to determine the additional value of tomograpy (CT) perfusion to noncontrast CT and CT angiography source images for infarct detection and localization in patients suspected of acute ischemic posterior circulation stroke. Methods-Patients with suspected acute ischemic ... read more posterior circulation stroke were selected from the Dutch acute Stroke Trial (DUST) study. Patients underwent noncontrast CT, CT angiography, and CT perfusion within 9 hours after stroke onset and CT or MRI on follow-up. Images were evaluated for signs and location of ischemia. Discrimination of 3 hierarchical logistic regression models (noncontrast CT [A], added CT angiography source images [B], and CT perfusion [C]) was compared with C-statistics. Results-Of 88 patients, 76 (86%) had a clinical diagnosis of ischemic stroke on discharge and 42 patients (48%) showed a posterior circulation infarct on follow-up ...
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. ...
Background: Collateral grade on cerebral angiography has great predictive significance for patient outcome, which is important to determine indication for endovascular therapy in acute ischemic stroke (AIS). Distal hyperintense vessels (DHV) on fluid-attenuated inversion recovery imaging (FLAIR) is a noninvasive and useful imaging marker that reflects leptomeningeal collateral flow. We investigated whether DHV in patients with AIS was associated with collaterals grade on cerebral angiography and clinical outcome after endovascular therapy.. Methods: We retrospectively reviewed patients with AIS who had internal carotid artery or middle cerebral artery occlusion in three comprehensive stroke centers from August 2011 to July 2015. We selected those who underwent FLAIR sequence before endovascular therapy. Presence of DHV was evaluated using a previously-published method. Collateral grades on pre-treatment cerebral angiography were assessed with the American Society of Interventional and ...
In this paper, we propose a robust 3D rigid registration technique for detecting cerebral aneurysms, arterial stenosis, and other vascular anomalies in a brain CT angiography. Our method is composed o
This page provides a realistic and comprehensive photo gallery that presents the anatomical structures found on cerebral CT. Computed tomography angiography (CTA) uses an injection of contrast material into your blood vessels and CT scanning to help diagnose and evaluate blood vessel disease or related conditions, such as aneurysms or blockages. There are a few disadvantages compared to catheter angiography. (2006) American Journal of Neuroradiology. You can refuse them by changing the settings, however this could impact on the proper functioning of the site. ADVERTISEMENT: Supporters see fewer/no ads, Please Note: You can also scroll through stacks with your mouse wheel or the keyboard arrow keys. CT angiography of the cerebral arteries (also known as a CTA carotids or an arch to vertex angiogram) is a noninvasive technique allows visualization of the internal and external carotid arteries and vertebral arteries and can include just the intracranial compartment or also extend down to the arch ...
The embryologic development of cerebral circulation is a natures miracle. At approximately 30-days of gestation, the internal carotid arteries (ICAs) arise from dorsal aortic arches and anastomose with longitudinal neural arteries to form a primitive vertebrobasilar system at four major sites [1] named according to their neighbouring structures as trigeminal, otic, hypoglossal and proatlantal intersegmental arteries. Failure of regression of these vessels lead to persistent primitive carotid-vertebrobasilar anastamoses of which most cephalic and most common is PTA [1]. Its reported prevalence is 0.1%-0.6% [2] of cerebral angiograms. Internal carotid artery gives origin to PTA which then anastomoses with the midbasilar artery. Basilar artery is usually hypoplastic caudal to this anastomosis [2 ...
When imaging patients for intracranial aneurysm, the goals are: (1) to assess the contour of the intracranial arteries, particularly in he regions of the ACOM (anterior communicating artery), PCOM (posterior communicating artery), ICA (internal carotid artery) bifurcation, MCA (middle cerebral artery) trifurcation, basilar tip, and PICA (posterior inferior cerebellar artery); (2) to assess the anatomy of the Circle of Willis and direction of flow, and; (3) to determine if there is evidence of a recent subarachnoid bleed
Uzziniet vairāk par 3D-RA 3D Rotational Angiography imaging technology. Skatiet specifikācijas, lejupielādējiet atbalsta dokumentus un atklāt saistītus produktus.
An area of your body, usually the groin, is cleaned and numbed with a local numbing medicine (anesthetic). A thin, hollow tube called a catheter is placed through an artery. The catheter is carefully moved up through the main blood vessels in the belly area and chest into an artery in the neck. X-rays help the doctor guide the catheter to the correct position. Once the catheter is in place, the dye is sent through the catheter. X-ray images are taken to see how the dye moves through the artery and blood vessels of the brain. The dye helps highlight any blockages in blood flow.. Sometimes, a computer removes the bones and tissues on the images being viewed, so that only the blood vessels filled with the dye are seen. This is called digital subtraction angiography (DSA).. After the x-rays are taken, the catheter is withdrawn. Pressure is applied on the leg at the site of insertion for 10 to 15 minutes to stop the bleeding or a device is used to close the tiny hole. A tight bandage is then applied. ...
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Objective: There is no special catheter used for carotid angiography in the market. We studied the efficacy feasibility and safety of Femoral S carotid catheter (made by ..
Are you a cardiac surgeon? See rare heart tumors by exploring Figure 1s cardiac surgery category. Interested in the brain? Review cerebral angiograms shared by neurologists in real time. New cases are shared by physicians, nursing professionals, and allied healthcare professionals on Figure 1 every day.
Superselectivity represents the most recent evolution of neuroangiogra-phy. Its objective is the visualization of the fine arterioles following low pressure injection of a small amount of contrast...
Eating has become quite a pastime for many people around the world. While eating lots of fatty foods can be fun, it can also lead to a myriad of different health problems. Over time, the fat can start to build up in the arteries, in turn causing high cholesterol, high blood pressure, and a significant risk for a heart attack or a stroke.
Eating has become quite a pastime for many people around the world. While eating lots of fatty foods can be fun, it can also lead to a myriad of different health problems. Over time, the fat can start to build up in the arteries, in turn causing high cholesterol, high blood pressure, and a significant risk for a heart attack or a stroke.
TY - JOUR. T1 - Intra-arterial digital subtraction angiography through the ear artery for experimental aneurysm imaging. AU - Ding, Y. H.. AU - Dai, D.. AU - Danielson, M. A.. AU - Kadirvel, R.. AU - Lewis, D. A.. AU - Cloft, H. J.. AU - Kallmes, David F.. PY - 2006/9/1. Y1 - 2006/9/1. N2 - Digital subtraction angiography through the central artery of the ear was performed to show elastase-induced aneurysms in 34 rabbits. Twenty-eight (82%) aneurysms in which common origins of the bilateral common carotid artery (CCA) were found were well shown. All 6 other aneurysms not well shown had separate origins of the CCAs from the aortic arch (P , .001). This method can be used for angiographic follow-up when there is a common origin of the CCAs.. AB - Digital subtraction angiography through the central artery of the ear was performed to show elastase-induced aneurysms in 34 rabbits. Twenty-eight (82%) aneurysms in which common origins of the bilateral common carotid artery (CCA) were found were well ...
Y-configured double stent technique is useful for coil embolization of a bifurcation wide neck aneurysm while preserving the patency of the two important vessels. However, if the important vessels emanating directly from the aneurysm comprised four vessels, two vessels not deployed, Y-stents might not be preserved with the Y-stent technique by itself. We report a case treated with Y-configured double stent-assisted coil embolization with a double microcatheter technique for complex basilar bifurcation aneurysm. A 78-year-old woman presented with a subarachnoid hemorrhage (SAH) of poor grade. CT-angiography showed a wide neck and shallow aneurysm of complex basilar bifurcation involving both posterior cerebral arteries (PCAs) and superior cerebellar arteries (SCAs). In the chronic stage of SAH, Y-configured double stent-assisted coil embolization with a double microcatheter technique was performed. After Y-stent (two Enterprise) deployment from both the PCAs to the basilar artery, coil ...
Incapacitating vertebrobasilar insufficiency is generally associated with bilateral vertebral artery disease, whereas unilateral vertebral artery stenosis usually is clinically silent. Regional brain perfusion has not been part of the routine evaluation of patients with vertebrobasilar insufficiency. This report describes two patients who had isolated unilateral vertebral artery stenosis operatively corrected to eliminate their incapacitating vertebrobasilar insufficiency. Hindbrain hypoperfusion was identified preoperatively and evaluated postoperatively, then correlated with patient presentation and response to revascularization.. Two patients with incapacitating vertebrobasilar insufficiency presented with isolated unilateral vertebral artery stenosis with patent, nonstenotic internal carotid arteries. Hindbrain hypoperfusion was demonstrated by iodine-123-iodoamphetamine single-photon emission computed tomography preoperatively and demonstrated significant improvement following ...
TY - JOUR. T1 - MRI of basilar artery hypoplasia associated with persistent primitive trigeminal artery. AU - Boyko, Orest. AU - Curnes, J. T.. AU - Blatter, D. D.. AU - Parker, D. L.. PY - 1996/1. Y1 - 1996/1. N2 - We report three patients with persistent trigeminal arteries, in all of whom the proximal basilar artery was hypoplastic. We draw attention to this common observation, which should not be mistaken for acquired narrowing.. AB - We report three patients with persistent trigeminal arteries, in all of whom the proximal basilar artery was hypoplastic. We draw attention to this common observation, which should not be mistaken for acquired narrowing.. KW - Basilar artery. KW - Congenital variants. KW - Trigeminal artery. UR - http://www.scopus.com/inward/record.url?scp=0030061136&partnerID=8YFLogxK. UR - http://www.scopus.com/inward/citedby.url?scp=0030061136&partnerID=8YFLogxK. U2 - 10.1007/s002340050184. DO - 10.1007/s002340050184. M3 - Article. C2 - 8773267. AN - SCOPUS:0030061136. VL - ...
Carotid cavernous fistulas are abnormal communications between the carotid artery and the cavernous sinus, either directly or via intradural branches of the internal or external carotid arteries.1 Direct fistulas are high flow, frequently follow trauma, and tend to have a dramatic clinical presentation. In contrast, indirect fistulas are low flow, often spontaneous, and may have a subtle clinical presentation. Symptoms and signs common to both types of fistulas include proptosis, chemosis, diplopia, visual loss, pulse-synchronous tinnitus, orbital bruit, elevated intraocular pressure, dilated episcleral veins, and retinal venous congestion. The pattern of venous drainage, either anterior into the ophthalmic veins or posterior into the petrosal sinuses, often dictates the clinical findings and radiographic appearance. Anterior drainage typically leads to the most dramatic ocular findings and enlargement of the superior orbital vein, the latter often detectable with CT or MRI. However, superior ...
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 ...
Background Stent-assisted coil embolization is useful for wide-necked, large and giant aneurysms, and is effective for avoiding coil herniation. However, the mobility of the microcatheter is often restricted, resulting in deviated or unbalanced coiling. In order to prevent this insufficient coiling, the authors devised a method for microcatheterization, the one and a half round microcatheterization technique. This technique is based on the formation of a one and a half round loop by the microcatheter along the aneurysmal wall. Furthermore, this technique can be supplemented with the double-catheter technique.. ...
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Moyamoya syndrome is a rare condition in which blood vessels at the base of the skull progressively narrow, limiting the flow of oxygenated blood to the brain. Surgical treatment options for Moyamoya syndrome include direct revascularization procedures such as an EC-IC bypass as well as indirect revascularization procedures like encephaloduroarteriosynangiosis (EDAS) and pial synangiosis. Here at Columbia University Medical Center/NewYork-Presbyterian Hospital, our neurosurgeons have particular expertise using these and other surgeries to treat patients with Moyamoya syndrome.. Moyamoya means puff of smoke in Japanese, and the condition is so named because the body grows a secondary network of small vessels in an effort to compensate for the restricted blood flow. On an arteriogram, the network of new vessels resembles a cloud-or puff of smoke. Moyamoya is more common in Japan than in the U.S., but it is unusual everywhere.. The blood vessel network that gives Moyamoya its name may lead to ...
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TY - JOUR. T1 - Time-of-flight magnetic resonance angiography of the canine brain at 3.0 Tesla and 7.0 Tesla. AU - Martin-Vaquero, Paula. AU - Da Costa, Ronaldo C.. AU - Echandi, Rita L.. AU - Tosti, Christina L.. AU - Knopp, Michael V.. AU - Sammet, Steffen. PY - 2011/3/1. Y1 - 2011/3/1. N2 - Objective - To evaluate the ability of 2-D time-of-flight (ToF) magnetic resonance angiography (MRA) to depict intracranial vasculature and compare results obtained with 3.0- and 7.0-T scanners in dogs. Animals - 5 healthy Beagles. Procedures - 2-D ToF-MRA of the intracranial vasculature was obtained for each dog by use of a 3.0-T and a 7.0-T scanner. Quantitative assessment of the images was obtained by documentation of the visibility of major arteries comprising the cerebral arterial circle and their branches and recording the number of vessels visualized in the dorsal third of the brain. Qualitative assessment was established by evaluation of overall image quality and image artifacts. Results - Use of ...
Characterized by headaches and seizures, an arteriovenous malformation (AVM) of the brain is a derivative of arteriovenous malformation, a disorder of the bodys circulatory system. An AVM of the brain, also known as a cerebral AVM, is a malformed group of blood vessels composed of an intricate tangle of arteries and veins. Though localized, cerebral AVMs can lead to severe neurological problems. Research in the field of arteriovenous malformation is growing particularly with noninvasive treatment options. What are cerebral AVMs? Cerebral AVMs may form during prenatal stages of a childs development, either during embryonic or fetal growth. Studies have found a certain number of cases form shortly after birth; however, the condition frequently presents in adults in their 20s or 30s. Cerebral AVMs are commonly misdiagnosed, with most cases found only incidentally through the performance of CT (computed tomography) scans on the brain. Patients complain of regular headaches and seizures before ...
UniProtKB/Swiss-Prot : 73 Moyamoya disease 2: A progressive cerebral angiopathy characterized by bilateral intracranial carotid artery stenosis and telangiectatic vessels in the region of the basal ganglia. The abnormal vessels resemble a puff of smoke (moyamoya) on cerebral angiogram. Affected individuals can develop transient ischemic attacks and/or cerebral infarction, and rupture of the collateral vessels can cause intracranial hemorrhage. Hemiplegia of sudden onset and epileptic seizures constitute the prevailing presentation in childhood, while subarachnoid bleeding occurs more frequently in adults ...
With Philips Digital Subtraction Angiography (DSA) automatic examination pre-sets support a smooth and efficient workflow in angiography examinations.
Under the influence of Professor Percival Bailey, the resident staff at the University of Illinois Research and Educational Hospitals in Chicago in the 1940s was induced to take up the then newly developing procedure of angiography of the vessels to and in the brain. Eventual facility with percutaneous carotid angiography led to accidental vertebral angiography, followed by percutaneous deliberate vertebral angiography as developed by the residents, among whom were Drs. Holden, Chester Powell, and myself. Retrograde brachial vertebral angiography followed. By these procedures, a large number of intracranial vascular and neoplastic lesions were discovered, our first one was a large pericallosal aneurysm operated on in 1946 by Dr. Milton Tinsley with me assisting. Ocular loupes were used for magnification. The lesion was not visualized in the postoperative angiogram which I carried out. After becoming a junior staff member of the staff under Dr. Eric Oldberg, I carried out angiograms and was ...
Millimeter measurements are needed for management decisions and treatment planning of some vascular diseases. Surveying 2 recent issues of the American Journal of Neuroradiology gleaned reports requiring millimeter measurements from digital subtraction angiography (DSA).1-4 These included aneurysm sizes, necks, and devices matched to artery size.. Despite the multiple advantages of DSA, the technology did not, and still does not, include a method of measurement that provides the same ability to measure in millimeters as earlier analog techniques did. C-arm DSA with adjustable intensifiers reduces tube distance and thus increases magnification. Intensifier positional variability and tabletop movements add to millimeter inaccuracy with variable magnification in different projections.5 FOV settings further complicate calibrations. There are challenges to calibrating real millimeters with different positions when scanning the same patient. Manufacturers did not develop millimeter adjustments for ...
The digital subtraction angiography method useful for three dimensional (3D) imaging of a selected volume of a body comprises the following steps. Acquiring first and second 3D data sets representative of an image of substantially the same selected volume in the body, the first and second data sets being acquired at different times corresponding to a pre- and a post injection of a contrast medium, respectively. Determining common reference points for spatially corresponding subvolumes in the data sets. Comparing in a 3D spatial manner data in subvolumes of the second data set with data in corresponding subvolumes in the first data set in order to determine a new reference point in each of the subvolumes of the first data set which results in a best match of the spatial similarity of the data in the corresponding subvolumes of the second data set. Spatially interpolating new data for the subvolumes of said first data set using the new reference points determined above and the originally acquired
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Utility of CT angiography and MR angiography for the follow-up of experimental aneurysms treated with stents or Guglielmi detachable coils.: We recommend furthe
Moyamoya syndrome (sometimes referred as Moyamoya disease also) is predominantly a problem observed in kids. It is a rare medical complexity when the walls of carotid arteries
A method of performing angiography of the occular fundus of an eye of a patient includes the steps of injecting intravenously calcein into the patient in an effective amount immediately prior to angiography and performing angiography on the patient. The invention further discloses a method of performing photocoagulation therapy and/or photodynamic therapy and angiography of the ocular fundus of an eye of a patient which includes the steps of performing photocoagulation therapy, injecting intravenously calcein into the patient in an effective amount immediately prior to angiography, and performing angiography on the patient.
There is a direct connection between the left internal carotid and basilar arteries, at level of the cavernous sinus. This is below the level of the posterior communicating arteries. Note the small size of the basilar and vertebral arteries.
3D angiography video of the left internal carotid artery (major artery of the head and neck that supplies blood to the brain) following surgery to treat haematoma (internal bleeding). The patient suffers from arteriovenous malformation (AVM) which is an abnormal connection between veins and arteries and it is usually congenital. Angiography is an imaging technique in which a radio-opaque contrast medium is injected into blood vessels to allow them to be seen on an X-ray. - Stock Video Clip K002/9044
CT Angiographic Characterization and Eveluation of Plaque by Age, Gender, Ethnicity, Race, and Cardiovascular Risk Factors (CORRELATE) Grant ...
Symptoms, treatment, risks, and surgery | Dr. Newell has 25+ years of experience helping with Moyamoya Disease. Moyamoya disease is a progressive disorder of the cerebral vessel.
I am a 30 year old female, just had a 4 vessel cerebral angiogram and was diagnosed with a 2mm aneurysm on the right side of the brain. I was told I would have to be followed every 2 years to make sur...
Temporary parent vessel occlusion performed to establish a high-flow interpositional bypass carries the risk of infarcts. The authors investigated the feasibility of a novel technique to establish a high-flow bypass without temporary parent vessel occlusion in order to lower the risk of ischemic complications. ...
During your test you will be cared for by a team of healthcare professionals which may include a Consultant, radiographers, nurses and ECG technicians. You will be asked to lie on an x-ray couch and made as comfortable as possible. The doctor who will be doing your test will explain everything to you so you know what to expect. Your heart rate and pulse will be monitored throughout the test by one of the nursing team. The x-ray equipment is capable of moving through 360 degrees in any plane and will take a series of complex x-ray images which will be manipulated and enhanced by the radiographer.. ...
Three weeks ago she had a cerebral angiogram done. That is a artery study of her brain. The purpose is to look at the brain and see if there is any other problems with the arteries and does she have good blood flow and also does she have the brain disease MoyaMoya which is what they think she has. The procedure was about and hour and half. She did great while she was under but in recovery she had to lay still for 4 hours to make sure the artery in her leg/groin area clotted and there was no bleeding. For a 2 year old to lay still is impossible, so she was heavily sedated and slept really well. She would try to roll and we (Dan or I) would put a hand on her leg to stop her. A week later Dan and I meet with her neuro-surgeon for the results. Her brain looks really good and the arteries look great and so does the blood flow. Of course there is a but to the story and that is there are some abnormalities on the brain. There are new tiny new arteries that are forming and the Doctor does not know why. ...
Rapid sequence CT imaging provides information about the vascular anatomy (CT angiography), locates major vessels encased by tumor, and eliminates the possibility of avascular lesions in the differential diagnosis of a head and neck tumor. Furthermore the use of density-time curves allows arterial and venous time. The patterns of density-time curves are characteristic for various lesions. For glomus complex tumors, regardless of the size and location, dynamic CT easily differentiates them from most of the simulating lesions. Angiography therefore is occasionally necessary for verification. Dynamic CT has a risk of complications the same as that of any intravenous injection of contrast material. Cerebral angiography via the femoral approach has been reported to have a risk of major complications of 0.28% and of minor complications of 6.25%.
The mechanisms by which intracranial aneurysms develop, enlarge, and rupture are unknown, and it remains difficult to collect the longitudinal patient-based information needed to improve our understanding. We submit, therefore, that mathematical models hold promise by allowing us to propose and test competing hypotheses on potential mechanisms of aneurysmal enlargement and to compare predicted outcomes with limited clinical information-in this way, we may begin to narrow the possible mechanisms and thereby focus experimental studies. In this paper, we present a constrained mixture model of evolving thin-walled, fusiform aneurysms and compare multiple competing hypotheses with regard to the production, removal, and alignment of the collagen that provides the structural integrity of the wall. The results show that this type of approach has the capability to infer potential means by which lesions enlarge and whether such changes are likely to produce a stable or unstable process. Such information ...
Endovascular therapy (group two) received a lower dose (0.09mg per kg bolus and 0.54mg/kilogram infusion over 40 minutes, maximum dose 53.6mg) or after Amendment #5, a standard dose of IV rt-PA (.9mg/kg with 10% as a bolus and the remainder over one hour) and then underwent an angiogram test (cerebral angiography) right after the medicine was given to check for blood clots. If a clot was not seen, then no more treatment was given. If a clot was seen, the neurointerventionalist chose (based on the location and extent of the blood clot) a protocol approved endovascular treatment given directly in the brain artery that would be most effective in reopening the blocked artery ...
CT angiography (CTA) - BRAIN answers are found in the Guide to Diagnostic Tests powered by Unbound Medicine. Available for iPhone, iPad, Android, and Web.
CT angiography combines a CT scan with the injection of dye. This technique is able to create pictures of the blood vessels in your belly or pelvis area.
Diagnostic cerebral angiography. Philadelphia: Lippincott Willims & Wilkins. pp. 84-87. ISBN 0-397-58404-0. ...
386-393 [1] Osborn, Anne (1999). Diagnostic Cerebral Angiography (2nd ed.). Philadelphia, PA, USA: Lippincott Williams & ... The internal carotid artery can receive blood flow via an important collateral pathway supplying the brain, the cerebral ... artery the anterior choroidal artery The internal carotid then divides to form the anterior cerebral artery and middle cerebral ... Middle cerebral artery (a terminal branch) The sympathetic trunk forms a plexus of nerves around the artery known as the ...
Cerebral angiography is the diagnostic standard. MRIs are usually normal. The Borden Classification of dural arteriovenous ... 1995). "Cerebral dural arteriovenous fistulas: clinical and angiographic correlation with a revised classification of venous ...
António Egas Moniz develops cerebral angiography. February 23 - German theoretical physicist Werner Heisenberg writes a letter ...
Clinical cerebral angiography), Turin, 1938. Die cerebrale Arteriographie und Phlebographie (Cerebral arteriography and ... L'angiographie cérébrale, ses applications et résultats en anatomic, physiologie et clinique (Cerebral angiography, its ... was a Portuguese neurologist and the developer of cerebral angiography. He is regarded as one of the founders of modern ... His work led to the use of angiography to detect internal carotid occlusion, as well as two Nobel Prize nominations in this ...
Cerebral angiography examinations may expose AVMs in the cerebrum. MRIs are also used in imaging the brain and can allow ... MRI, CT, and cerebral angiography are all useful for investigating the extent and location of any vascular lesions that are ... Fluorescein angiography is commonly used to diagnose the syndrome. There have been several methods in treating patients who ... Fluorescein angiography is quite useful in diagnosing the disease, and the use of ultrasonography and optical coherence ...
"Normal Variants of the Cerebral Circulation at Multidetector CT Angiography". RadioGraphics (2009) 29: 1036. Waleed Azab, ... In around 0.1 to 0.6% of individuals, as sampled by magnetic resonance angiography, the trigeminal artery fails to involute and ...
This is based on MRI scan, magnetic resonance angiography and CT scan. A cerebral digital subtraction angiography (DSA) ... High resolution digital subtraction angiography may help in classifying CCF into dural and direct type and thus formulate a ...
The gold standard is cerebral angiography (with or without digital subtraction angiography). This involves puncture of a large ... MR angiography). They use smaller amounts of contrast and are not invasive. CT angiography and MR angiography are more or less ... Kaufmann TJ, Kallmes DF (June 2008). "Diagnostic cerebral angiography: archaic and complication-prone or here to stay for ... The thrombolytic drug is administered either intravenously or during cerebral angiography through a catheter directly into the ...
Cerebral angiography can be performed, but it is invasive and not very sensitive. Orbital venography is difficult to perform, ... Coutinho, J; de Bruijn, SF; Deveber, G; Stam, J (2011). "Anticoagulation for cerebral sinus thrombosis". Cochrane Database Syst ...
Patients have CNS symptoms as well as cerebral vasculitis by angiography and leptomeningeal biopsy. There are several ... 1.5 cm) Isolated cerebral vasculitis. Affects medium and small arteries over a diffuse CNS area, without symptomatic ... However, in Takayasu's arteritis, where the aorta may be involved, it is unlikely a biopsy will be successful and angiography ...
Through cerebral angiography, the sign has been demonstrated to correspond to embolic or atherosclerotic occlusion of an artery ... The sign has been observed in the middle cerebral artery (MCA), posterior cerebral artery (PCA), vertebral artery, and basilar ... Launes J, Ketonen L (November 1987). "Dense middle cerebral artery sign: an indicator of poor outcome in middle cerebral artery ... 1993). "Increased density in the middle cerebral artery by nonenhanced computed tomography. Prognostic value in acute cerebral ...
If a cerebral aneurysm is identified on angiography, two measures are available to reduce the risk of further bleeding from the ... Aneurysms of the middle cerebral artery and its related vessels are hard to reach with angiography and tend to be amenable to ... and can be confirmed by transcranial doppler or cerebral angiography. About one third of people admitted with subarachnoid ... the choice is between cerebral angiography (injecting radiocontrast through a catheter to the brain arteries) and CT ...
In 1949, the Portuguese neurologist António Egas Moniz, an early developer of the cerebral angiography, was awarded the Nobel ... he also was a pioneer in the development of cerebral angiography Pedro Nunes - 16th century mathematician, one of the greatest ...
Cerebral Angiography and Egas Moniz. American Journal of Roentgenology. 1992;359(2):364.[permanent dead link] ... who had previously assisted Moniz with his research on cerebral angiography.[n 13][100] The intention was to remove some of the ... For his 1927 development of cerebral angiography, which allowed routine visualisation of the brain's peripheral blood vessels ... of Neurology in 1935 where he had presented a poster exhibit of the Portuguese neurologist's work on cerebral angiography.[126] ...
Angiography of the leg, heart and cerebral vessels.. *Placement of a PICC (peripherally inserted central catheter) ... Cardiology for diagnostic angiography, percutaneous coronary interventions, (pacemakers, implantable cardioverter ...
In 1927 Egas Moniz introduced cerebral angiography, whereby both normal and abnormal blood vessels in and around the brain ... Uptake of SPECT agent is nearly 100% complete within 30 to 60 seconds, reflecting cerebral blood flow (CBF) at the time of ... SPECT provides a "snapshot" of cerebral blood flow since scans can be acquired after seizure termination (so long as the ... Dandy also observed that air introduced into the subarachnoid space via lumbar spinal puncture could enter the cerebral ...
These tests are cerebral angiography to confirm that there is no intracranial blood flow, and a radionuclide scan to confirm ...
Cerebral angiography showed a right moyamoya pattern and an ipsilateral dural AVF fed by branches of the external carotid ... These vessels are the ACA (anterior cerebral artery), MCA (middle cerebral artery), and ICA (internal carotid artery). The ... On angiography, a "puff of smoke" appearance is seen, and the treatment of choice is surgical bypass. About 10% of cases of ... The artery is then sutured to a branch of the middle cerebral artery on the surface of the brain and the bone is replaced. In ...
X-ray shadow radiography and cerebral angiography. The first line was influential in the evolving concept of neuroimaging; the ... and research on cerebral metabolism." In 1981 he received the President's Award for Distinguished Federal Civilian Service and ... and in characterizing clinically important diseases such as cerebral ischemia, starvation, and epilepsy. Oldendorf's ...
It is not usually necessary to proceed to cerebral angiography, a more precise but invasive investigation of the brain's blood ... Cerebral venous sinus thrombosis, thrombosis of the veins of the brain, usually causes a headache that reflects raised ... Day JW, Raskin NH (November 1986). "Thunderclap headache: symptom of unruptured cerebral aneurysm". Lancet. 2 (8518): 1247-8. ... The most important causes are subarachnoid hemorrhage, cerebral venous sinus thrombosis, and cervical artery dissection[ ...
... or post-stent balloon dilation and cerebral angiography. Carotid stenting is the preferred therapy for patients who are at an ... A number of other steps may or may not be performed, including the use of a cerebral protection device, pre- ... Society for Cardiovascular Angiography and Interventions, Society of Interventional Radiology, Society of NeuroInterventional ...
Cerebral angiography, electroencephalography, transcranial doppler ultrasonography, and cerebral scintigraphy are some of the ...
... and demonstration of loss of cerebral blood flow (cerebral angiography, transcranial doppler ultrasonography, or cerebral ... and other confounding factors may also produce cerebral electric silence on EEG. van der Lugt A (November 2010). "Imaging tests ...
Medical imaging Angiography Aortography Cerebral angiography Coronary angiography Lymphangiography Pulmonary angiography ...
... angiography itself was first developed in 1927 by the Portuguese physician Egas Moniz at the University of Lisbon for cerebral ... Catheters in these shapes carry his name and are still used to this day for selective coronary angiography. The use of tapered ... Donald S. Baim; William Grossman (2000). Grossman's Cardiac Catheterization, Angiography, and Intervention. Philadelphia, PA: ... Society For Cardiovascular Angiography And Interventions. Archived from the original on 2007-02-07. Retrieved 2007-04-08. ...
... in 1952 and chlorpromazine in 1953 A very modern radiology department with facility for sophisticated cerebral angiography, ...
Cerebral angiography is normal Thyroid hormone abnormalities are common (>80% cases): subclinical hypothyroidism (35% cases) ...
Osborn, Anne G.; Jacobs, John M. (1999), Diagnostic Cerebral Angiography, Lippincott Williams & Wilkins, pp. 153 Media related ... prior to the terminal bifurcation of the ICA into the anterior cerebral artery and middle cerebral artery. Posteriorly, it ... The development of the posterior cerebral artery (PCA) in the fetal brain occurs relatively late and arises from the fusion of ... The brain is supplied with blood by the internal carotid arteries and also by the posterior cerebral arteries; the posterior ...
As a result, cerebral angiography remains an essential part of the neurosurgeon's diagnostic imaging armamentarium and, ... introduced cerebral angiography, whereby both normal and abnormal blood vessels in and around the brain could be visualized ... Dandy also observed that air introduced into the subarachnoid space via lumbar spinal puncture could enter the cerebral ... increasingly, of the therapeutic armamentarium as well, in the neurointerventional management of cerebral aneurysms and other ...
Angiography[edit]. Angiogram showing a transverse projection of the vertebro basilar and posterior cerebral circulation. ... Main article: Angiography. Angiography is the use of fluoroscopy to view the cardiovascular system. An iodine-based contrast is ... Angiography is used to find aneurysms, leaks, blockages (thromboses), new vessel growth, and placement of catheters and stents ... It is also used in CT pulmonary angiography to decrease the required dose of iodinated contrast.[23] ...
Early imaging methods - invasive and sometimes dangerous - such as pneumoencephalography and cerebral angiography have been ... Brain metastasis in the right cerebral hemisphere from lung cancer, shown on magnetic resonance imaging. ... although glial cells outnumber neurons roughly 4 to 1 in the cerebral cortex. Glia come in several types, which perform a ...
Magnetic resonance angiography and duplex ultrasonography appear to be slightly more cost-effective in diagnosing peripheral ... artery disease among people with intermittent claudication than projectional angiography.[3] Treatment[edit]. Exercise can ...
Angiography. *Digital subtraction angiography *Cerebral angiography. *Aortography. *Fluorescein angiography. *Radionuclide ...
... cerebral angiography. Sistem TOAST membagi stroke menjadi 5 subtipe yaitu,[11][12] large artery atherosclerosis (LAAS), ... impaired cerebral autoregulation dan perubahan protrombotik dipercaya merupakan penyebab cerebral small vessel disease (SVD). ... Cryptogenic cerebral infarction (CCI)[sunting , sunting sumber]. CCI paling banyak ditemukan dalam penderita patent foramen ... "Cryptogenic cerebral infarction: from classification to concept". SourceCHU de la Cavale Blanche, Service de neurologie; Timsit ...
In 1927 Egas Moniz introduced cerebral angiography, whereby both normal and abnormal blood vessels in and around the brain ... Uptake of SPECT agent is nearly 100% complete within 30 to 60 seconds, reflecting cerebral blood flow (CBF) at the time of ... SPECT provides a "snapshot" of cerebral blood flow since scans can be acquired after seizure termination (so long as the ... Dandy also observed that air introduced into the subarachnoid space via lumbar spinal puncture could enter the cerebral ...
Cerebral bypass surgery[edit]. Cerebral bypass surgery was developed in the 1960s in Switzerland by Gazi Yasargil, M.D. When a ... Comparison of computed tomography angiography with digital subtraction angiography in the assessment of clipped intracranial ... Some individuals with a ruptured cerebral aneurysm die from the initial bleeding. Other individuals with cerebral aneurysm ... CT Angiography and MR Angiography for Detection-Prospective Blinded Comparison in a Large Patient Cohort". Radiology. 219 (3): ...
... causes an increased risk of cerebral microbleeds having the appearance on MRI scans of 5 to 10 mm or smaller, ... Foundation/American Heart Association Task Force on Practice Guidelines and the Society for Cardiovascular Angiography and ... Gorelick PB (June 2009). "Cerebral microbleeds: evidence of heightened risk associated with aspirin use". Archives of Neurology ... hypointense (dark holes) patches.[107][108] Such cerebral microbleeds are important, since they often occur prior to ischemic ...
It accounts for 20% of all cases of cerebrovascular disease in the United States, behind cerebral thrombosis (40%) and cerebral ... Both computed tomography angiography (CTA) and magnetic resonance angiography (MRA) have been proved to be effective in ... "Journal of Cerebral Blood Flow & Metabolism. 30 (4): 689-702. doi:10.1038/jcbfm.2009.282. PMC 2949160. PMID 20087366. Archived ... Cerebral bleeding affects about 2.5 per 10,000 people each year.[2] It occurs more often in males and older people.[2] About 44 ...
... and cerebral scintigraphy (technetium Tc 99m exametazime). Cerebral angiography is considered the most sensitive confirmatory ... For example, although one major medical dictionary[6] considers "brain death" to be synonymous with "cerebral death" (death of ... CT angiography is neither required nor sufficient test to make the diagnosis.[21] ... Also, a radionuclide cerebral blood flow scan that shows complete absence of intracranial blood flow must be considered with ...
Patients have CNS symptoms as well as cerebral vasculitis by angiography and leptomeningeal biopsy. ... Isolated cerebral vasculitis. Affects medium and small arteries over a diffuse CNS area, without symptomatic extracranial ... However, in Takayasu's arteritis, where the aorta may be involved, it is unlikely a biopsy will be successful and angiography ...
"Characterisation of the normal right ventricular pressure-volume relation by biplane angiography and simultaneous ...
Doby, T. (1992). Cerebral Angiography and Egas Moniz, American Journal of Roentgenology. 359 (2):, pp. 364. ...
... low-dose coronary CT angiography, nuclear imaging, and X-ray angiography), differences in the mechanism by which this damage ... The cerebral blood flow (CBF) corresponds to the consumed glucose differently in different brain regions. Initial results show ... This technique relies on the fact that cerebral blood flow and neuronal activation are coupled. When an area of the brain is in ... Mosso's manuscripts do not provide direct evidence that the balance was really able to measure changes in cerebral blood flow ...
Cerebral microbleeds: evidence of heightened risk associated with aspirin use. Arch Neurol. 2009, 66 (6): 691-3. PMID 19506128 ... Foundation/American Heart Association Task Force on Practice Guidelines and the Society for Cardiovascular Angiography and ... Stroke; a journal of cerebral circulation. September 2005, 36 (9): 2034-6. PMID 16100022. doi:10.1161/01.STR.0000177887.14339. ... Use of antithrombotic drugs and the presence of cerebral microbleeds: the Rotterdam Scan Study. Arch Neurol. 2009, 66 (6): 714- ...
Cerebral angiography. *Pneumoencephalography. *Echoencephalography/Transcranial Doppler. *Magnetic resonance imaging of the ... Techniques such as angioplasty, stenting, clot retrieval, embolization, and diagnostic angiography are endovascular procedures. ... or one of the cerebral hemispheres of the brain; those two procedures, when possible, are also very, very rarely used in ...
Cerebral angiography. *Pneumoencephalography. *Echoencephalography/Transcranial Doppler. *Magnetic resonance imaging of the ... Inflammation of the head is often slow to onset after injury, and can lead to a fatal rise in cerebral pressure. A recently ...
March 1999). "In vivo mapping of cerebral acetylcholinesterase activity in aging and Alzheimer's disease". Neurology. 52 (4): ... Radionuclide angiography. *Radioisotope renography. *Sestamibi parathyroid scintigraphy. *Radioactive iodine uptake test. *Bone ...
2007). "Computed tomographic pulmonary angiography vs ventilation-perfusion lung scanning in patients with suspected pulmonary ...
Fluoroscopy and angiography are special applications of X-ray imaging, in which a fluorescent screen and image intensifier tube ... Stenosis of the carotid arteries can presage cerebral infarcts (strokes). DVT in the legs can be found via ultrasound before it ... CT scanning has become the test of choice in diagnosing some urgent and emergent conditions such as cerebral hemorrhage, ... certain types of cerebral aneurysm clips, metal fragments in the eyes and some metallic hardware due to the powerful magnetic ...
Fluoroscopy and angiography are special applications of X-ray imaging, in which a fluorescent screen and image intensifier tube ... CT scanning has become the test of choice in diagnosing some urgent and emergent conditions, such as cerebral hemorrhage, ... certain types of cerebral aneurysm clips, metal fragments in the eyes and some metallic hardware due to the powerful magnetic ...
Cerebral edema. References[edit]. *^ American Psychological Association (APA): perfusion. (n.d.). Dictionary.com Unabridged (v ... Application of this process is used to develop radionuclide angiography, a method of diagnosing heart problems. ... Cerebral blood flow determination by rapid-sequence computed-tomography: theoretical analysis. Radiology 137: 679-686, December ... August 2000). "Continuous monitoring of regional cerebral blood flow: experimental and clinical validation of a novel thermal ...
Angiography. *Digital subtraction angiography *Cerebral angiography. *Aortography. *Fluorescein angiography. *Radionuclide ... Grier, D.J.; Watson, L.J.; Hartnell, G.G.; Wilde, P. (1993). "Are routine chest radiographs prior to angiography of any value ...
Hypertension can increase the risk of cerebral, cardiac, and renal events.[30] ... coronary computed tomographic angiography, and coronary angiogram, among others.[65] ...
In otherwise healthy people, the increased risk of bleeding is minimal, but those who have had recent surgery, cerebral ... In certain circumstances, OCT angiography has the potential for evaluating the effects of intensified antithrombotic therapy.[ ... for evaluating the effects of intensified antithrombotic therapy using retinal optical coherence tomography angiography". ...
This revised and enlarged edition of Cerebral Angiography, which includes new angiographic studies and illustrative drawings, ... This revised and enlarged edition of Cerebral Angiography, which includes new angiographic studies and illustrative drawings, ... While the emphasis throughout is on the diagnostic value of cerebral angiography, many examples of endovascular treatment in ... Atherosclerosis Cerebral Vessels Endovacular Treatment Occlusive Diseases Vascular Abnormalities Venous Thrombosis Authors and ...
Color enhanced medicine radiology angiography showing normal blood vessels in the brain. (Enhancement of GA3404) - Stock Image ... Keywords: angiography, arteriography, blood vessel, brain, brain angiography, cardiovascular, cardiovascular system, cerebral, ... Caption: Color enhanced medicine radiology angiography showing normal blood vessels in the brain. (Enhancement of GA3404) ... cerebral angiograph, circulatory system, medical, medical imaging, nervous system, x ray, x-ray, xray ...
You had a procedure called cerebral angiography. This is an X-ray study of the blood vessels that supply your brain. Heres ... Discharge Instructions for Cerebral Angiography You had a procedure called cerebral angiography. This is an X-ray study of the ... The older you are, the greater the risk for a TIA or a stroke after a cerebral angiography. You might notice these symptoms at ...
title = "Cerebral angiography in pediatrics",. author = "G. Scotti and S. Pieralli and C. Righi and F. Triulzi and A. Visciani ... Scotti G, Pieralli S, Righi C, Triulzi F, Visciani A. Cerebral angiography in pediatrics. In Rivista di Neuroradiologia. 3 ed. ... Cerebral angiography in pediatrics. / Scotti, G.; Pieralli, S.; Righi, C.; Triulzi, F.; Visciani, A. ... Scotti, G., Pieralli, S., Righi, C., Triulzi, F., & Visciani, A. (1989). Cerebral angiography in pediatrics. In Rivista di ...
Cerebral Angiography Normal Anatomy and Vascular Pathology / This revised and enlarged edition of Cerebral Angiography, which ... Cerebral Angiography Normal Anatomy and Vascular Pathology / by: Bradac, Gianni Boris. Published: (2011) ... The first part of the book describes the normal anatomy of the cerebral arteries and veins, with attention to mor... ...
Arterial dissections complicating cerebral angiography and cerebrovascular interventions. Harry J. Cloft, Mary E. Jensen, David ... Cloft, H. J., Jensen, M. E., Kallmes, D. F., & Dion, J. E. (2000). Arterial dissections complicating cerebral angiography and ... Arterial dissections complicating cerebral angiography and cerebrovascular interventions. / Cloft, Harry J.; Jensen, Mary E.; ... Arterial dissections complicating cerebral angiography and cerebrovascular interventions. American Journal of Neuroradiology. ...
Searching for Global Cerebral Angiography Market 2020 Business Opportunities - Siemens Healthineers (Germany), TERUMO ... Global Cerebral Angiography Market 2020 by Company, Type and Application, Forecast to 2025 is the latest report released by ... Global Cerebral Angiography Market 2020 Business Opportunities - Siemens Healthineers (Germany), TERUMO Corporation (Japan). ... The report estimates the global Cerebral Angiography market size and forecast in different geographies, types, and end-use ...
Discussion about Improvement of Stability of the Scan Timing by Placing Small ROI in Cerebral 3D-CTA. . Biblioteca virtual para ... In three-dimensional computed tomography angiography 3D-CTA in our facility, we usually scan the volume of the brain according ... Cerebral 3D-CTA, Small ROI, Bolus Tracking, Volume Scan, 320-Row CT Cite this paper. Watanabe, Y. , Ino, K. and Yoshikawa, K. ... Therefore, we design the surpassing method to place the small region-of-interest ROI at the basal cerebral arteries and to ...
The history of cerebral angiography is discussed, extending from the first human angiogram in 1927 to the present time.... ... This chapter covers the essential aspects of diagnostic cerebral angiography. ... This chapter covers the essential aspects of diagnostic cerebral angiography. The history of cerebral angiography is discussed ... Cloft HJ, Joseph GJ, Dion JE (1999) Risk of cerebral angiography in patients with subarachnoid hemorrhage, cerebral aneurysm, ...
Cerebral angiography is a procedure that uses a special dye (contrast material) and x-rays to see how blood flows through the ... Cerebral angiography (cerebral angiogram) - diagnostic. In: Chernecky CC, Berger BJ, eds. Laboratory Tests and Diagnostic ... Angiography with a catheter is used less often now. This is because MRA (magnetic resonance angiography) and CT angiography ... Cerebral angiography is a procedure that uses a special dye (contrast material) and x-rays to see how blood flows through the ...
Cerebral angiography is a form of angiography which provides images of blood vessels in and around the brain, thereby allowing ... cerebral angiography may yield better images than less invasive methods such as computed tomography angiography and magnetic ... In some jurisdictions, cerebral angiography is required to confirm brain death.[citation needed] Prior to the advent of modern ... In addition, cerebral angiography allows certain treatments to be performed immediately, based on its findings. If, for example ...
Current and accurate information for patients about Cerebral Angiography. Learn what you might experience, how to prepare for ... Cerebral Angiography. Cerebral angiography uses a catheter, x-ray imaging guidance and an injection of contrast material to ... What is Cerebral Angiography. Angiography is a minimally invasive medical test that uses x-rays and an iodine-containing ... Cerebral angiography is also called intra-arterial digital subtraction angiography (IADSA). This phrase refers to acquiring the ...
Cerebral angiography is a procedure that uses a special dye (contrast material) and x-rays to see how blood flows through the ... Angiography with a catheter is used less often now. This is because MRA (magnetic resonance angiography) and CT angiography ... Intra-arterial digital subtraction angiography; IADSA How the Test is Performed. Cerebral angiography is done in the hospital ... Cerebral angiography is a procedure that uses a special dye (contrast material) and x-rays to see how blood flows through the ...
Cerebral angiography. Definition. Cerebral angiography is a procedure that uses a special dye (contrast material) and x-rays to ... Cerebral angiography is most often used to identify or confirm problems with the blood vessels in the brain. ... Angiography with a catheter is used less often now. This is because MRA (*magnetic resonance angiography ... Vertebral angiogram; Angiography - head; Carotid angiogram; Cervicocerebral catheter-based angiography; Intra-arterial digital ...
... have revealed a difference in configuration resulting in one of the catheters becoming markedly damaged during angiography. The ...
Download this Front View Cerebral Angiography Monitoring video now. And search more of iStocks library of royalty-free stock ... Front view cerebral angiography monitoring. - Stock video. .... Ukraine, Aneurysm, Arteriogram, Artery, Atherosclerosis. ...
Download this Black And White Cerebral Angiography Scan video now. And search more of iStocks library of royalty-free stock ... Black and white cerebral angiography scan stock video. .... Ukraine, Aneurysm, Arteriogram, Artery, Atherosclerosis. ...
... on WN Network delivers the latest Videos and Editable pages for News & Events, including Entertainment, ... Cerebral angiography. Cerebral angiography is a form of angiography which provides images of blood vessels in and around the ... Cerebral angiography. Cerebral angiography is a form of angiography which provides images of blood vessels in and around the ... Based on procedure, the market is segmented into coronary angiography, peripheral angiography, cerebral angiography, vascular ...
... on WN Network delivers the latest Videos and Editable pages for News & Events, including Entertainment, ... Coronary Angiography, Pulmonary Angiography, Cerebral Angiography, Extremity Angiography, Renal Angiography ... Angiography ... Cerebral angiography. Cerebral angiography is a form of angiography which provides images of blood vessels in and around the ... Cerebral angiography. Cerebral angiography is a form of angiography which provides images of blood vessels in and around the ...
... and other vascular anomalies in a brain CT angiography. Our method is composed o ... we propose a robust 3D rigid registration technique for detecting cerebral aneurysms, arterial stenosis, ... Cerebral Vessel Enhancement Using Rigid Registration in Three-Dimensional CT Angiography. In: Sanfeliu A., Martínez Trinidad J. ... Napel, S., Marks, M.P., Rubin, G.D., Dake, M.D., McDonnell, C.H., Song, S.M., Enzmann, D.R., Jeffrey, R.B.: CT Angiography with ...
Which specific anatomical features of posterior cerebral artery (PCA) stroke may be identified on angiography?. Updated: Jul 30 ... In this anatomical study, 53 patients underwent computed tomography angiography, 49 underwent digital subtraction angiography, ... and Which specific anatomical features of posterior cerebral artery (PCA) stroke may be identified on angiography? What to Read ... de Monyé C, Dippel DW, Siepman TA, Dijkshoorn ML, Tanghe HL, van der Lugt A. Is a fetal origin of the posterior cerebral artery ...
Neurologic complications of cerebral angiography.. J E Heiserman, B L Dean, J A Hodak, R A Flom, C R Bird, B P Drayer, E K Fram ... Neurologic complications of cerebral angiography.. J E Heiserman, B L Dean, J A Hodak, R A Flom, C R Bird, B P Drayer, E K Fram ... Neurologic complications of cerebral angiography.. J E Heiserman, B L Dean, J A Hodak, R A Flom, C R Bird, B P Drayer and E K ... Neurologic complications of cerebral angiography. Message Subject (Your Name) has sent you a message from American Journal of ...
Cerebral angiography You will receive an email whenever this article is corrected, updated, or cited in the literature. You can ... Cerebral angiography. The Journal of the American Osteopathic Association, March 1957, Vol. 56, 410-412. doi:https://doi.org/ ... RUBERG R. Cerebral angiography. J Am Osteopath Assoc 1957;56(7):410-412. doi: https://doi.org/. ...
Intravenous Flat-Detector Computed Tomography Angiography for Symptomatic Cerebral Vasospasm following Aneurysmal Subarachnoid ... "Intravenous Flat-Detector Computed Tomography Angiography for Symptomatic Cerebral Vasospasm following Aneurysmal Subarachnoid ...
Catheter cerebral angiography remains the criterion standard for evaluation of vascular anatomy. However, it is a more invasive ... Drugs & Diseases , Neurology , Posterior Cerebral Artery Stroke Q&A What is the role of catheter cerebral angiography in the ... Catheter cerebral angiography remains the criterion standard for evaluation of vascular anatomy. However, it is a more invasive ... de Monyé C, Dippel DW, Siepman TA, Dijkshoorn ML, Tanghe HL, van der Lugt A. Is a fetal origin of the posterior cerebral artery ...
A. Sharath Reddy at MaxCure Hospitals Hyderabad India, Angiogram: What I wish Id known before the procedure, Cerebral ... Diagnostic Cerebral Angiography, Live Angiography (CAG) by Dr. ... Cerebral angiography. Cerebral angiography is a form of ... Cerebral angiography. Cerebral angiography is a form of angiography which provides images of blood vessels in and around the ... Cerebral Angiography Procedure. Cerebral Angiography Procedure. Digital subtraction angiography (DSA) is a fluoroscopy ...
Digital Intravenous Cerebral Angiography Author(s): Joachim F. Seeger; Raymond F. Carmody; Janice R. L. Smith; Theron W. Ovitt ... Initial studies have been directed toward digital video subtraction angiography (DVSA) using intravenous injections of contrast ...
Cerebral angiography in children. The Journal of the American Osteopathic Association, December 1972, Vol. 72, 390. doi:https ... Cerebral angiography in children You will receive an email whenever this article is corrected, updated, or cited in the ... Cerebral angiography in children. J Am Osteopath Assoc 1972;72(4):390. doi: https://doi.org/. ...
... resonance angiography fusion technique for intraoperative navigation during microsurgical resection of cerebral arteriovenous ... Complete AVM obliteration was demonstrated on intraoperative angiography in all cases.. CONCLUSIONS: Precise anatomical ... and this detail may be provided by fusing MR images and MR angiography (MRA) sequences. The current study describes the use of ...
... on WN Network delivers the latest Videos and Editable pages for News & Events, including ... Cerebral angiography. Cerebral angiography is a form of angiography which provides images of blood vessels in and around the ... In addition, cerebral angiography allows certain treatments to be performed immediately, based on its findings. If, for example ... For some applications this method may yield better images than less invasive methods such as computed tomography angiography ...
Intra-Arterial Thrombolysis for Left Middle Cerebral Artery Embolic Stroke During Coronary Angiography. Patrizia Presbitero, ... The carotid angiogram, performed 2 hours after coronary angiography at the beginning of cerebral symptoms, reveals total ... The carotid angiogram, performed immediately after coronary angiography at the beginning of cerebral symptoms, reveals total ... Intra-Arterial Thrombolysis for Left Middle Cerebral Artery Embolic Stroke During Coronary Angiography ...
Clinically silent cerebral lesions after cerebral catheter angiography. Rofo. 2001; 173: 300-305. ... Figure 1. MESs during intra-arterial cerebral angiography. Transcranial Doppler sonography of both middle cerebral arteries ... cerebral angiography and transcranial Doppler sonography during angiography were used to evaluate the frequency of cerebral ... 25 A large number of microembolic signals in the cerebral vessels has been described not only during cerebral angiography9 but ...
"Real-world" comparison of non-invasive imaging to conventional catheter angiography in the diagnosis of cerebral aneurysms.. ... it has become increasingly difficult to justify the role of conventional angiography [digital subtraction angiography (DSA)] ... Based on numerous reports citing high sensitivity and specificity of non-invasive imaging [e.g. computed tomography angiography ... CTA) or magnetic resonance angiography (MRA)] in the detection of intracranial aneurysms, ...
This book offers detailed guidance on the diagnostic use of cerebral angiography based on precise... ... Applied Cerebral Angiography. Normal Anatomy and Vascular Pathology. Auflage. 3/E 2018. ... Beyond explaining the diagnostic value of cerebral angiography, a key aim is to equip readers with the precise knowledge of the ... This book offers detailed guidance on the diagnostic use of cerebral angiography based on precise description of the ...
Transcranial Doppler correlation with cerebral angiography in sickle cell disease.. R J Adams, F T Nichols, R Figueroa, V McKie ... Transcranial Doppler correlation with cerebral angiography in sickle cell disease.. R J Adams, F T Nichols, R Figueroa, V McKie ... Transcranial Doppler correlation with cerebral angiography in sickle cell disease.. R J Adams, F T Nichols, R Figueroa, V McKie ... we compared transcranial Doppler and cerebral angiography in a primarily young, symptomatic group of 33 patients (18 males and ...
Cerebral angiography. Vertebral angiogram; Angiography - head; Carotid angiogram; Cervicocerebral catheter-based angiography; ... Angiography with a catheter is used less often now. This is because MRA ( magnetic resonance angiography ) and CT angiography ... Cerebral angiography is a procedure that uses a special dye (contrast material) and x-rays to see how blood flows through the ... Cerebral angiography is most often used to identify or confirm problems with the blood vessels in the brain. ...
  • Global Cerebral Angiography Market 2020 by Company, Type and Application, Forecast to 2025 is the latest report released by MarketsandResearch.biz that provides helpful insights into all the leading trends of the market. (icrowdnewswire.com)
  • The research features pertinent details on growth characteristics and all the recent developments in the global Cerebral Angiography market. (icrowdnewswire.com)
  • You will find vendor listing and activity that are significantly mentioned in the report, addressing the global Cerebral Angiography market. (icrowdnewswire.com)
  • The report estimates the global Cerebral Angiography market size and forecast in different geographies, types, and end-use segments. (icrowdnewswire.com)
  • It shares a versatile understanding of other vital growth influencers such as risk analysis, barrier challenges as well as a detailed discussion on threat probability that affects growth trends in the global Cerebral Angiography market. (icrowdnewswire.com)
  • This revised and enlarged edition of Cerebral Angiography , which includes new angiographic studies and illustrative drawings, offers detailed guidance on diagnostic use of the procedure. (springer.com)
  • While the emphasis throughout is on the diagnostic value of cerebral angiography, many examples of endovascular treatment in different pathological situations are also presented, with discussion of indications, risks and results. (springer.com)
  • We retrospectively reviewed 12 cases of arterial dissections complicating cerebral angiography and cerebrovascular interventions to evaluate the clinical course of these dissections. (elsevier.com)
  • CONCLUSION: Arterial dissections are an uncommon complication of cerebral angiography and cerebrovascular interventions and usually have a benign clinical course. (elsevier.com)
  • Dion, Jacques E. / Arterial dissections complicating cerebral angiography and cerebrovascular interventions . (elsevier.com)
  • The first part of the book describes the normal anatomy of the cerebral arteries and veins, with attention to morphological aspect, embryological development, function, and vascular territories. (springer.com)
  • Seven of the dissections were noted at the time of contrast material injection for the filming of cerebral angiograms. (elsevier.com)
  • BACKGROUND AND PURPOSE: Iatrogenic dissections are an uncommon complication of cerebral angiography. (elsevier.com)
  • Lastly, the most common complications of cerebral angiography are detailed. (springer.com)
  • Neurologic complications of cerebral angiography. (ajnr.org)
  • In cerebral angiography, a thin plastic tube called a catheter is inserted into an artery in the leg or arm through a small incision in the skin. (radiologyinfo.org)
  • Jayaraman, M.V., Mayo-Smith, W.W., Doberstein, C.E.: Intracanalicular Aneurysm of the Anterior Inferior Cerebellar Artery Revealed by Multi-Detector CT Angiography. (springer.com)
  • Which specific anatomical features of posterior cerebral artery (PCA) stroke may be identified on angiography? (medscape.com)
  • Posterior cerebral artery territory infarcts in the New England Medical Center Posterior Circulation Registry. (medscape.com)
  • Posterior cerebral artery territory infarcts: clinical features, infarct topography, causes and outcome. (medscape.com)
  • Capitani E, Laiacona M, Pagani R, Capasso R, Zampetti P, Miceli G. Posterior cerebral artery infarcts and semantic category dissociations: a study of 28 patients. (medscape.com)
  • What is the role of catheter cerebral angiography in the evaluation of posterior cerebral artery (PCA) stroke? (medscape.com)
  • Digital subtraction angiogram demonstrating an acute L posterior cerebral artery (PCA) occlusion (red arrow) following balloon-assisted coiling of a basilar tip aneurysm. (medscape.com)
  • Digital subtraction angiogram demonstrating revascularization of acute L posterior cerebral artery (PCA) occlusion (red arrow) during a balloon-assisted basilar tip aneurysm revascularization with use of balloon angioplasty. (medscape.com)
  • Coronary angiography, performed from the femoral approach with 6F catheters, excluded coronary artery disease. (ahajournals.org)
  • 3-5 Furthermore, the apposition of thrombus to the embolic material may be an important component of cerebral artery occlusion. (ahajournals.org)
  • An immediate carotid angiogram to assess cerebral artery occlusion appears to be the best and least time-consuming approach. (ahajournals.org)
  • We report a rare case of repeated focal seizures and prolonged left hemiparesis after cerebral angiography and BTO of the right internal carotid artery. (scirp.org)
  • Bow Hunter's syndrome: surgical vertebral artery decompression guided by dynamic intraoperative angiography. (bioportfolio.com)
  • The authors performed fluorescein cerebral angiography in patients after aneurysm clip placement to confirm the patency of the parent artery, perforating artery, and other arteries around the aneurysm. (thejns.org)
  • INTRODUCTION: Heubner's recurrent artery (RAH) in brain selective catheter angiograms (digital subtraction angiography, DSA) was evaluated. (uzh.ch)
  • 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. (uzh.ch)
  • Digital Subtraction Angiography (DSA) was set as the gold standard by imaging for evaluating the cerebral artery stenosis and occlusion [ 11 , 12 ]. (alliedacademies.org)
  • By a retrospective designed method, we analyzed the aortocranial angiography from patients of TIA accomplicated with T2D who were detected by DSA, in order to realize the influence of T2D on cerebral artery blood vessel and provide scientific basis for secondary prevention of patients with TIA and T2D. (alliedacademies.org)
  • Reid, MH 1977, ' Bilateral cerebral angiography with catheterization of only one carotid artery ', Neuroradiology , vol. 14, no. 2, pp. 65-66. (elsevier.com)
  • On angiography, her basilar artery was filled with intraluminal clot while the vertebral arteries were normal. (isharonline.org)
  • In 3 patients, angiography documented dissection of the extracranial 3rd segment of the vertebral artery near the atlantoaxial joint. (isharonline.org)
  • Angiography showed a simple and direct fistula between the third segment of the right vertebral artery and the epidural veins at the C-1 level, where the artery runs backward above the arch of the C-1 just proximal to the penetration of the dura. (isharonline.org)
  • CEREBRAL angiography can be performed by open surgical procedure, with direct injection of the common carotid artery, or by percutaneous needle puncture of the carotid artery. (jamanetwork.com)
  • Femoral artery - An artery located in the groin area that is the most frequently accessed site for arterial puncture in angiography. (thefreedictionary.com)
  • Selective intra-arterial digital subtraction angiography was undertaken by a femoral artery approach in both internal carotid arteries in seven patients, in both vertebral arteries in six patients, and in one vertebral artery in one patient. (bmj.com)
  • Cerebral angiography is most often used to identify or confirm problems with the blood vessels in the brain. (medlineplus.gov)
  • Cerebral angiography produces very detailed, clear and accurate pictures of blood vessels in the brain and may eliminate the need for surgery. (radiologyinfo.org)
  • Angiography is a minimally invasive medical test that uses x-rays and an iodine-containing contrast material to produce pictures of blood vessels in the brain. (radiologyinfo.org)
  • Brain vessels angiography. (istockphoto.com)
  • The Stentrode system is small and flexible enough to safely pass through curving blood vessels in a procedure called cerebral angiography , eliminating the need for open brain surgery. (wn.com)
  • Color enhanced medicine radiology angiography showing normal blood vessels in the brain. (sciencephoto.com)
  • Intra-arterial digital subtraction angiography (IA-DSA) has remained the "gold standard" in the assessment of cerebral vessels. (ahajournals.org)
  • Beyond explaining the diagnostic value of cerebral angiography, a key aim is to equip readers with the precise knowledge of the anatomy of cerebral vessels required for optimal application of endovascular therapy of pathologies involving the arteries and veins of the brain. (frohberg.de)
  • Angiography is used to obtain diagnostic information about the blood vessels that carry blood to various parts of the body, particularly whether the vessel is blocked by a blood clot or narrowed by atherosclerosis. (merckmanuals.com)
  • A cerebral CTP acquisition not only contains information about tissue perfusion but also allows for reconstructing a dynamic CTA (4D-CTA) to evaluate the intracranial vessels within the covered region. (springer.com)
  • Angiography is the x-ray study of the blood vessels. (encyclopedia.com)
  • Angiography is used to detect abnormalities or blockages in the blood vessels (called occlusions) throughout the circulatory system and in some organs. (encyclopedia.com)
  • Angiography requires the injection of a contrast dye that makes the blood vessels visible to x ray. (encyclopedia.com)
  • The first part of the book depicts in detail the normal appearance of the cerebral vessels on angiographic studies. (teknotasarim.com)
  • IF ONE WISHES to gain skill in the interpretation of cerebral angiograms, first he must study the anatomy of vessels relative to the surrounding brain. (teknotasarim.com)
  • In a few circumstances, neurosurgeons, in preparation for surgery, require a more precise knowledge of the pattern and position of blood vessels, which can be obtained only by angiography . (cancerstreatment.com)
  • Thus selective angiography may be performed following injection directly into veins or arteries such as the carotid, the vertebral, or the vessels of the extremities. (drugs.com)
  • Diagnostic cerebral angiography is a special test performed to provide a map of the blood vessels in the brain. (drlimeilin.com)
  • Although it is an invasive procedure, cerebral angiography is considered the best way (=gold standard) to look at the blood vessels. (drlimeilin.com)
  • Fluorescein dye - An orange dye used to illuminate the blood vessels of the retina in fluorescein angiography. (thefreedictionary.com)
  • The second edition of this atlas presents a wealth of normal and pathologic findings observed on CT angiography with 3D reconstruction in diverse clinical applications, including the imaging of cerebral, carotid, thoracic, coronary, abdominal, and peripheral vessels. (springer.com)
  • This study proposes a fully automatic labeling algorithm detecting up to 32 cerebral vessels including arteries and veins, based on 20 data sets of time-resolved contrast-enhanced angiography. (ismrm.org)
  • Cerebral angiography is used to image the blood vessels of the brain and the blood flowing through them. (strokecenter.org)
  • Angiography involves entering a catheter into the body to inject a dye (a contrast medium) into the carotid arteries, the vessels of the neck that lead to the brain. (strokecenter.org)
  • Cerebral angiographies show the brain's blood vessels. (strokecenter.org)
  • Doctors use cerebral angiography to detect abnormalities in the brain's blood vessels, such as narrowing or blockage. (strokecenter.org)
  • Cerebral angiography is a procedure that uses a special dye (contrast material) and x-rays to see how blood flows through the brain. (medlineplus.gov)
  • This revised and enlarged edition of Cerebral Angiography , which includes new angiographic studies and illustrative drawings, offers detailed guidance on diagnostic use of the procedure. (springer.com)
  • One hundred fifty diagnostic cerebral angiographies were randomized into 50 procedures, each using conventional angiographic technique, or systemic heparin treatment throughout the procedure, or air filters between the catheter and both the contrast medium syringe and the catheter flushing. (ahajournals.org)
  • You had a procedure called cerebral angiography. (vidanthealth.com)
  • Patients who have blood clotting problems, have a known allergy to contrast mediums, or are allergic to iodine, a component of some contrast mediums, may also not be suitable candidates for an angiography procedure. (encyclopedia.com)
  • Depending on the type of angiography procedure being performed, the contrast medium is either injected by hand with a syringe or is mechanically injected with an automatic injector connected to the catheter. (encyclopedia.com)
  • It produces a cerebral angiogram, or an image that can help your doctor find blockages â ¦ This revised and enlarged edition of Cerebral Angiography, which includes new angiographic studies and illustrative drawings, offers detailed guidance on diagnostic use of the procedure. (teknotasarim.com)
  • What makes cerebral angiography an invasive procedure? (drlimeilin.com)
  • The left carotid digital subtraction angiography that was performed immediately revealed total occlusion of the M2 part of the left MCA. (ahajournals.org)
  • Jin Pyeong Jeon, Seung Hun Sheen, and Yong-Jun Cho, "Intravenous Flat-Detector Computed Tomography Angiography for Symptomatic Cerebral Vasospasm following Aneurysmal Subarachnoid Hemorrhage," The Scientific World Journal , vol. 2014, Article ID 315960, 8 pages, 2014. (hindawi.com)
  • The use of a catheter in cerebral angiography may cause you some discomfort or pain, although an anesthetic is usually given to help alleviate most discomfort. (strokecenter.org)
  • Initial studies have been directed toward digital video subtraction angiography (DVSA) using intravenous injections of contrast material. (spie.org)
  • After contrast agent is injected through the catheter, a technician takes x-rays of the arteries and veins being evaluated (in the head for cerebral angiography), which are outlined by the contrast agent. (merckmanuals.com)
  • Speckle contrast based optical coherence angiography (OCA) and optical coherence Doppler tomography (ODT) have been applied to image cerebral blood flow previously. (osapublishing.org)
  • Suspected mechanisms of seizure were a cerebral blood flow change induced by BTO and neurotoxicity of accumulated contrast medium. (scirp.org)
  • To investigate the feasibility of low-concentration contrast media (LC-CM) in cerebral and cervical dual-energy CT angiography (DE-CTA) using an advanced monoenergetic (Mono+) reconstruction technique. (springer.com)
  • Sixty-five consecutive patients prospectively selected to undergo cerebral and cervical DE-CTA were randomised into two groups: 32 patients (63.7 ± 9.7 years) in the high-concentration contrast medium (HC-CM) group with iopromide 370 and 33 patients (60.7 ± 10.8 years) in the low-concentration contrast medium (LC-CM) group with iodixanol 270. (springer.com)
  • This requires a second injection of contrast material, additional examination time and may result in additional radiation exposure if the scan range overlaps with the cerebral CTP. (springer.com)
  • Patients with kidney disease or injury may suffer further kidney damage from the contrast mediums used for angiography. (encyclopedia.com)
  • Catheter - A long, thin, flexible tube used in angiography to inject contrast material into the arteries. (thefreedictionary.com)
  • Diagnostic digital subtraction cerebral angiography was performed 4 days after admission with the nonionic contrast media Iomeprol. (ovid.com)
  • 100 patients undergoing digital subtraction cerebral angiography were randomized to have contrast delivered by either hand or mechanical injection. (openrepository.com)
  • However, radiation exposure to the radiologist's hand and body were reduced by up to 70% by using a mechanical injector for contrast delivery during selective cerebral angiography with digital subtraction. (openrepository.com)
  • Angiography performed after a small tube is placed in a blood vessel and a contrast medium is injected to outline the internal structure of the blood vessel. (tabers.com)
  • The purpose of this study was to evaluate the use of MR venography in the depiction of the normal intracranial venous anatomy and its variants, to assess its potential pitfalls in the diagnosis of dural venous sinus thrombosis, and to compare the findings with those of conventional catheter angiography. (teknotasarim.com)
  • Intraoperative Fluorescence Cerebral Angiography by Laser Surgical Microscopy: Comparison With Xenon Microscopy and Simultaneous Observation of Cerebral Blood Flow and Surrounding Structures. (bioportfolio.com)
  • Angiography of the coronary arteries to determine any pathological obstructions to blood flow to the heart muscle. (tabers.com)
  • CE MRV was superior to TOF MRV and MP-RAGE sequences in visualizing cerebral venous and sinus thrombosis. (em-consulte.com)
  • Consecutive patients with cerebral venous thrombosis diagnosed by MRI and MRV or DSA, without a previous history of neurological disease, were prospectively included in the study. (bmj.com)
  • Venema, H.W., Hulsmans, F.J.H., den Heeten, G.J.: CT Angiography of the Circle of Willis and Intracranial Internal Carotid Arteries: Maximum Intensity Projection with Matched Mask Bone Elimination - Feasibility Study. (springer.com)
  • This use of angiography as an indirect assessment tool is nowadays obsolete as modern non-invasive diagnostic methods are available to image many kinds of primary intracranial abnormalities directly[citation needed]. (wikipedia.org)
  • This is called digital subtraction angiography (DSA). (medlineplus.gov)
  • Need help in choosing the right cerebral digital subtraction angiography dsa hospital? (credihealth.com)
  • Get detailed info on services & amenities, accreditations, doctors and other credentials of top hospitals for cerebral-digital-subtraction-angiography-dsa in Mumbai. (credihealth.com)
  • Check OPD schedule of doctors and book appointment online top hospitals for cerebral-digital-subtraction-angiography-dsa in Mumbai. (credihealth.com)
  • The gold standard for the diagnosis of CVS is digital subtraction angiography (DSA), but the utility for routine screening with DSA during the early course of aSAH is unclear. (heart.org)
  • With digital data processing (digital subtraction angiography), small amounts of agent can produce high-resolution images. (merckmanuals.com)
  • Digital subtraction angiography (DSA) is still the standard of reference for the assessment of cerebral venous thrombosis. (bmj.com)
  • The aim of this study was to assess the diagnostic performance of 64-section MD-CTA in the detection and characterization of anatomical variations of the ACAC compared with three-dimensional rotational angiography (3DRA). (inserm.fr)
  • Complete AVM obliteration was demonstrated on intraoperative angiography in all cases. (nih.gov)
  • Patients with suspected or known cerebral venous thrombosis were examined prospectively by TOF MRV, CE MRV and MP-RAGE sequences. (em-consulte.com)
  • To investigate recanalisation in the first 12 months after cerebral venous thrombosis. (bmj.com)
  • 33 consecutive patients presenting with cerebral venous thrombosis were enrolled in the study. (bmj.com)
  • Cerebral MRI and MRV were done at four months and repeated after 12 months if venous thrombosis persisted. (bmj.com)
  • No patient suffered recurrent cerebral venous thrombosis, deep vein thrombosis, or pulmonary embolism during follow up. (bmj.com)
  • The results suggest that recanalisation only occurs within the first four months following cerebral venous thrombosis and not thereafter, irrespective of oral anticoagulation. (bmj.com)
  • Cerebral venous thrombosis is an infrequent disease that mainly affects young to middle aged patients. (bmj.com)
  • Our aim in the present study was to investigate the recanalisation of cerebral venous thrombosis after four and 12 months of follow up, using cranial MRI and MRV. (bmj.com)
  • Few clinical investigations have been performed that evaluate the efficacy of computed tomographic angiography (CTA) in the assessment of extracranial-intracranial bypass. (elsevier.com)
  • We conducted a preoperative angiography and a BTO of the right ICA to evaluate collateral flows. (scirp.org)
  • Preoperative determination of cerebral localization helps surgeons to plan the extent of surgery and to avoid creation of postoperative language deficits in the patient. (cancerstreatment.com)
  • The Mono+ reconstruction technique could reduce the concentration of iodinated CM in the diagnosis of cerebral and cervical angiography. (springer.com)
  • Aim of this clinical study is to establish a novel technique, the so called intraoperative fluorescence angiography, for kidney graft perfusion visualization during the transplant procedur. (bioportfolio.com)
  • While the emphasis throughout is on the diagnostic value of cerebral angiography, many examples of endovascular treatment in different pathological situations are also presented, with discussion of indications, risks and results. (springer.com)
  • In addition, angiography is required as a precursor to endovascular treatments. (medscape.com)