Angiography, Digital Subtraction
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.
Subtraction Technique
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).
Magnetic Resonance Angiography
Cerebral Angiography
Intracranial Aneurysm
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)
Coronary Angiography
Radiographic Image Enhancement
Imaging, Three-Dimensional
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.
Intracranial Arteriovenous Malformations
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, X-Ray Computed
Embolization, Therapeutic
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.
Sensitivity and Specificity
Carotid Artery, Internal
Image Processing, Computer-Assisted
Aneurysm, Ruptured
Central Nervous System Vascular Malformations
Arterial Occlusive Diseases
Carotid Stenosis
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)
Subarachnoid Hemorrhage
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.
Tomography, Spiral Computed
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.
Iohexol
Salivary Gland Calculi
Reproducibility of Results
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.
Fluorescein Angiography
Iopamidol
Ultrasonography, Doppler, Duplex
Observer Variation
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).
Constriction, Pathologic
Ultrasonography, Doppler, Color
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.
Radiographic Image Interpretation, Computer-Assisted
Radiography, Dental, Digital
A rapid, low-dose, digital imaging system using a small intraoral sensor instead of radiographic film, an intensifying screen, and a charge-coupled device. It presents the possibility of reduced patient exposure and minimal distortion, although resolution and latitude are inferior to standard dental radiography. A receiver is placed in the mouth, routing signals to a computer which images the signals on a screen or in print. It includes digitizing from x-ray film or any other detector. (From MEDLINE abstracts; personal communication from Dr. Charles Berthold, NIDR)
Arteriovenous Malformations
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.
Vertebrobasilar Insufficiency
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.
X-Ray Intensifying Screens
Screens which absorb the energy in the x-ray beam that has penetrated the patient and convert this energy into a light pattern which has as nearly as possible the same information as the original x-ray beam. The more light a screen produces for a given input of x-radiation, the less x-ray exposure and thus shorter exposure time are needed to expose the film. In most film-screen systems, the film is sandwiched between two screens in a cassette so that the emulsion on each side is exposed to the light from its contiguous screen.
Artifacts
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.
Carotid Artery Diseases
Predictive Value of Tests
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.
Gadolinium DTPA
Anterior Cerebral Artery
Magnetic Resonance Imaging
Carotid-Cavernous Sinus Fistula
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.
Vertebral Artery
Tibial Arteries
The anterior and posterior arteries created at the bifurcation of the popliteal artery. The anterior tibial artery begins at the lower border of the popliteus muscle and lies along the tibia at the distal part of the leg to surface superficially anterior to the ankle joint. Its branches are distributed throughout the leg, ankle, and foot. The posterior tibial artery begins at the lower border of the popliteus muscle, lies behind the tibia in the lower part of its course, and is found situated between the medial malleolus and the medial process of the calcaneal tuberosity. Its branches are distributed throughout the leg and foot.
Retrospective Studies
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.
Surgical Instruments
Prospective Studies
Cranial Sinuses
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).
Vasospasm, Intracranial
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).
Cerebrovascular Disorders
Image Enhancement
Basilar Artery
Radiography, Interventional
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.
Ultrasonography, Doppler, Transcranial
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.
Arteriovenous Fistula
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.
Aneurysm
Treatment Outcome
Myelography
Circle of Willis
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.
Cerebral Revascularization
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.
Iothalamate Meglumine
Carotid Arteries
Intracranial Arteriosclerosis
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.
Radiation Dosage
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).
Feasibility Studies
Blood Flow Velocity
Radiography, Bitewing
Carotid Artery, External
Follow-Up Studies
Moyamoya Disease
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.
Radionuclide Angiography
Phantoms, Imaging
Devices or objects in various imaging techniques used to visualize or enhance visualization by simulating conditions encountered in the procedure. Phantoms are used very often in procedures employing or measuring x-irradiation or radioactive material to evaluate performance. Phantoms often have properties similar to human tissue. Water demonstrates absorbing properties similar to normal tissue, hence water-filled phantoms are used to map radiation levels. Phantoms are used also as teaching aids to simulate real conditions with x-ray or ultrasonic machines. (From Iturralde, Dictionary and Handbook of Nuclear Medicine and Clinical Imaging, 1990)
Stents
Collateral Circulation
Aortography
Ultrasonography
Angioplasty, Balloon
Gadolinium
Sialadenitis
Immediate Dental Implant Loading
Endosseous dental implantation where implants are fitted with an abutment or where an implant with a transmucosal coronal portion is used immediately (within 1 week) after the initial extraction. Conventionally, the implantation is performed in two stages with more than two months in between the stages.
Ischemic Attack, Transient
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)
Ultrasonography, Doppler
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)
Popliteal Artery
Cerebrospinal Fluid Rhinorrhea
Endarterectomy
Brain Ischemia
Severity of Illness Index
Celiac Artery
Preoperative Care
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)
Renal Artery Obstruction
Coronary Artery Disease
Cavernous Sinus
Organometallic Compounds
Radiography, Dual-Energy Scanned Projection
Ischemia
Iliac Artery
False Negative Reactions
Algorithms
Cerebral Infarction
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).
False Positive Reactions
Peripheral Vascular Diseases
Single-Blind Method
Middle Cerebral Artery
Aneurysm, False
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.
Libraries, Digital
ROC Curve
Catheterization
Endarterectomy, Carotid
Equipment Failure Analysis
Image Interpretation, Computer-Assisted
Models, Anatomic
Vascular Diseases
Blood Vessel Prosthesis
Technetium
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.
Rotation
Indocyanine Green
Cerebral Hemorrhage
Postoperative Complications
Tomography, Emission-Computed, Single-Photon
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.
Coronary Disease
Photography
Brain
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.
Radiology Information Systems
Multidetector Computed Tomography
Radionuclide Imaging
The production of an image obtained by cameras that detect the radioactive emissions of an injected radionuclide as it has distributed differentially throughout tissues in the body. The image obtained from a moving detector is called a scan, while the image obtained from a stationary camera device is called a scintiphotograph.
Lower Extremity
Stroke
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)
Sodium Pertechnetate Tc 99m
Gene Library
Hemodynamics
Radiography, Thoracic
Pulmonary Artery
Signal Processing, Computer-Assisted
Carotid Artery, Common
The two principal arteries supplying the structures of the head and neck. They ascend in the neck, one on each side, and at the level of the upper border of the thyroid cartilage, each divides into two branches, the external (CAROTID ARTERY, EXTERNAL) and internal (CAROTID ARTERY, INTERNAL) carotid arteries.
Risk Factors
Arteriosclerosis
Fundus Oculi
Diagnostic Imaging
Ultrasonography, Interventional
Combined carotid endarterectomy and coronary artery bypass graft. (1/1139)
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)Popliteal artery occlusion as a late complication of liquid acrylate embolization for cerebral vascular malformation. (2/1139)
Occlusion of arteriovenous malformations of the brain (BAVMs) by means of an endovascular approach with liquid acrylate glue is an established treatment modality. The specific hazards of this procedure are related to the central nervous system. In the case of unexpectedly rapid polymerization of the cyanoacrylate glue and adhesion of the delivering microcatheter to the BAVM, severing the catheter at the site of vascular access is considered an acceptable and safe management. We present a unique complication related to this technique that has not been described yet. Fragmentation and migration of the microcatheter, originally left in place, had caused popliteal artery occlusion, which required saphenous vein interposition, in a 25-year-old man. Suggestions for avoiding this complication are discussed. (+info)Factors influencing the development of vein-graft stenosis and their significance for clinical management. (3/1139)
OBJECTIVES: To assess the influence of clinical and graft factors on the development of stenotic lesions. In addition the implications of any significant correlation for duplex surveillance schedules or surgical bypass techniques was examined. PATIENTS AND METHODS: In a prospective three centre study, preoperative and peroperative data on 300 infrainguinal autologous vein grafts was analysed. All grafts were monitored by a strict duplex surveillance program and all received an angiogram in the first postoperative year. A revision was only performed if there was evidence of a stenosis of 70% diameter reduction or greater on the angiogram. RESULTS: The minimum graft diameter was the only factor correlated significantly with the development of a significant graft stenosis (PSV-ratio > or = 2.5) during follow-up (p = 0.002). Factors that correlated with the development of event-causing graft stenosis, associated with revision or occlusion, were minimal graft diameter (p = 0.001), the use of a venovenous anastomosis (p = 0.005) and length of the graft (p = 0.025). Multivariate regression analysis revealed that the minimal graft diameter was the only independent factor that significantly correlated with an event-causing graft stenosis (p = 0.009). The stenosis-free rates for grafts with a minimal diameter < 3.5 mm, between 3.5-4.5 and > or = 4.5 mm were 40%, 58% and 75%, respectively (p = < 0.05). Composite vein and arm-vein grafts with minimal diameters > or = 3.5 mm were compared with grafts which consisted of a single uninterrupted greater saphenous vein with a minimal diameter of < 3.5 mm. One-year secondary patency rates in these categories were of 94% and 76%, respectively (p = 0.03). CONCLUSIONS: A minimal graft diameter < 3.5 mm was the only factor that significantly correlated with the development of a graft-stenosis. However, veins with larger diameters may still develop stenotic lesions. Composite vein and arm-vein grafts should be used rather than uninterrupted small caliber saphenous veins. (+info)Bilateral vertebral artery occlusion following cervical spine trauma--case report. (4/1139)
A 41-year-old female presented with a rare case of bilateral vertebral artery occlusion following C5-6 cervical spine subluxation after a fall of 30 feet. Digital subtraction angiography showed occlusion of the bilateral vertebral arteries. Unlocking of the facet joint, posterior wiring with iliac crest grafting, and anterior fusion were performed. The patient died on the 3rd day after the operation. This type of injury has a grim prognosis with less than a third of the patients achieving a good outcome. (+info)Evaluation of cerebral aneurysms with high-resolution MR angiography using a section-interpolation technique: correlation with digital subtraction angiography. (5/1139)
BACKGROUND AND PURPOSE: The objective was to evaluate the results of high-resolution, fast-speed, section-interpolation MR angiography and digital subtraction angiography (DSA), thereby examining the potential use of a primary noninvasive screening test for intracranial aneurysms. METHODS: The images were obtained in 39 cerebral aneurysmal lesions from 30 patients with a time-of-flight MR angiographic technique using a 1.5-T superconducting MR system. The total image volume was divided into four slabs, with 48 partitions each. To save time, only 24 phase-encoded steps were measured and interpolated to 48. The parameters used included 30/6.4 (TR/TE), a flip angle of 25 degrees , a 160x512 matrix, a field of view of 150x200, 7 minutes 42 seconds of scan time, an effective thickness of 0.7 mm, and an entire thickness of 102.2 mm. Maximum intensity projection was used for the image analysis, and a multiplanar reconstruction technique was used for patients with intracranial aneurysms. RESULTS: Among 39 intracranial aneurysmal lesions in 30 patients, 21 were ruptured and 18 were unruptured. Twelve lesions were less than 2 mm in size, 12 were 3 to 5 mm, 12 were 6 to 9 mm, and three were larger than 10 mm. At initial examinations, 38 of 39 aneurysmal lesions were detected by both MR angiography and DSA, with 97% sensitivity. In confirming aneurysms in neck and parent vessels, multiplanar reconstruction was successful in detecting all 39 aneurysms, whereas MR angiography was successful in detecting 27 (69%) and DSA was successful in detecting 32 (82%) of the lesions. CONCLUSION: High-resolution MR angiography with a section-interpolation technique showed equal results to those of DSA for the detection of intracranial aneurysms and may be used as a primary noninvasive screening test. In the evaluation of aneurysms in neck and parent vessels, the concurrent use of MR angiography and multiplanar reconstruction was far superior to the use of either MR angiography or DSA alone. (+info)Twinkling artifact on intracerebral color Doppler sonography. (6/1139)
Transcranial Doppler sonography shows potential as a noninvasive technique for long-term follow-up of treated intracranial saccular aneurysms. This technical note describes a color Doppler artifact related to microcoil architecture that might represent a potential pitfall in transcranial Doppler sonographic evaluation of aneurysmal cavity thrombosis, since it may be wrongly interpreted as residual flow or aneurysmal cavity recanalization. (+info)Cerebral veins: comparative study of CT venography with intraarterial digital subtraction angiography. (7/1139)
BACKGROUND AND PURPOSE: Our objective was to compare the reliability of CT venography with intraarterial digital subtraction angiography (DSA) in imaging cerebral venous anatomy and pathology. METHODS: In 25 consecutive patients, 426 venous structures were determined as present, partially present, or absent by three observers evaluating CT multiplanar reformatted (MPR) and maximum intensity projection (MIP) images. These results were compared with the results from intraarterial DSA and, in a second step, with the results of an intraobserver consensus. In addition, pathologic conditions were described. RESULTS: Using DSA as the standard of reference, MPR images had an overall sensitivity of 95% (specificity, 19%) and MIP images a sensitivity of 80% (specificity, 44%) in depicting the cerebral venous anatomy. On the basis of an intraobserver consensus including DSA, MPR, and MIP images (415 vessels present), the sensitivity/specificity was 95%/91% for MPR, 90%/100% for DSA, and 79%/91% for MIP images. MPR images were superior to DSA images in showing the cavernous sinus, the inferior sagittal sinus, and the basal vein of Rosenthal. Venous occlusive diseases were correctly recognized on both MPR and MIP images. Only DSA images provided reliable information of invasion of a sinus by an adjacent meningioma. CONCLUSION: CT venography proved to be a reliable method to depict the cerebral venous structures. MPR images were superior to MIP images. (+info)A persistent pharyngohyostapedial artery: embryologic implications. (8/1139)
A 3-year-old child was examined because of otorrhagia. CT scans showed an unusual vessel, confirmed by angiography, related to a persistent pharyngohyostapedial artery. This embryonic persistent artery associated with the normal internal carotid artery would explain the "duplication" aspect of the internal carotid artery. (+info)
Plus it
Intra-arterial digital subtraction angiography through the ear artery for experimental aneurysm imaging<...
Gadolinium-enhanced magnetic resonance angiography in renal artery stenosis: comparison with digital subtraction angiography |...
VIDEO REQUIREMENTS FOR DIGITAL SUBTRACTION ANGIOGRAPHY.<...
Digital Subtraction Angiography Cost in Bangalore, Digital Subtraction Angiography Hospitals | Credihealth
Dynamic MR digital subtraction angiography using contrast enhancement, fast data acquisition, and complex subtraction
Optimization of quantitative time-resolved 3D (4D) digital subtraction angiography in a porcine liver model | European...
Contrast-Enhanced 3D MR Angiography of the Carotid Artery: Comparison with Conventional Digital Subtraction Angiography |...
Advanced digital subtraction angiography and MR fusion imaging protocol applied to accurate placement of flow diverter device<...
Top Cerebral Digital Subtraction Angiography Dsa Hospitals in New Delhi | Credihealth
Temporal interpolation of low-frame-rate digital subtraction angiograms | (1996) | Hsiung | Publications | Spie
Diagnostic pitfalls in postinterventional intraarterial magnetic resonance angiography after recanalization of femoropopliteal...
Wertigkeit der Digitalen Subtraktionsangiographie (DSA) gegenüber der Magnetresonanzangiographie (MRA) in der Diagnostik der...
3DFT MR angiography of the carotid bifurcation: potential and limitations as a screening examination
Digital subtraction angiography: current clinical applications. | Stroke
Cervical Carotid Pseudo-Occlusions and False Dissections | Stroke
Digital Subtraction Angiography | Philips Healthcare
Assessment of regional wall motion abnormality without contrast medium by digital subtraction angiography using Fourier...
US5647360A - Digital subtraction angiography for 3D diagnostic imaging
- Google Patents
List of Digital Subtraction Angiography Medications (7 Compared) - Drugs.com
Three-dimensional CT angiography in the evaluation of cerebral arteries in acute hemorrhage MAHE Digital Repository
A framework for spacial-variant thresholding of digital subtraction angiography images | (2005) | Sang | Publications | Spie
Use of Computed Tomography - Digital Subtraction Angiography in differentiating pulmonary thrombosis and pulmonary artery...
Pesquisa | Portal Regional da BVS
Hepatic Arterial Mapping by CT Angiography, Cone Beam CT and Digital Subtraction Angiography
| MedCrave
The effect of demographic features on aortic arch anatomy and its role | NDT
Ultra-high-resolution subtraction CT angiography in the follow-up of treated intracranial aneurysms | Insights into Imaging |...
Digital Subtraction Angiography
DIAGNOSIS OF MACULAR DISEASE: Use of Optos Wide-Angle Panoramic200TM versus Conventional Digital Fundus Images | IOVS | ARVO...
SU-E-QI-06: Design and Initial Validation of a Precise Capillary Phantom to Test Perfusion Systems (Journal Article) | SciTech...
Enhancement of Information in Medical Image Data: Applications in a Clinical Research Environment | UH Department of Biomedical...
Diagnostic value of non-invasive imaging techniques in the detection of carotid artery stenosis: a systematic review
Perfusion-diffusion mismatch in MRI to indicate endovascular treatment of cerebral vasospasm after subarachnoid haemorrhage |...
Recall - Digital angiography system application terminates after certain steps - SoftwareCPR
Patent US5690106 - Flexible image registration for rotational angiography - Google Patents
Horizons in World Cardiovascular Research. Volume 15 - Nova Science Publishers
Minnesota Supercomputing Institute
Feasability of contrast-enhanced ultrasound with image fusion of CEUS and MS-CT for endovascular grafting in infrarenal...
Objective We sought to evaluate the accuracy of quantitative three-dimensional (3D) - Suppression of KRas-mutant cancer through...
Cerebral angiography | University of Maryland Medical Center
Search Results for Journal of Neurosurgery | jns
Viewing (in MMV)
C-arm angulation increases radiation exposure to the head during complex EVAR - Vascular News
November/December 1982 - Volume 17 - Issue 6 : Investigative Radiology
Negative CT angiography findings in patients with spontaneous subarachnoid hemorrhage: When is digital subtraction angiography...
Rapid diagnosis of thoracic aortic transection using intravenous digital subtraction angiography. Limited value of technetium...
Aortoiliac and lower extremity arteries assessed with 16-detector row CT angiography: prospective comparison with digital...
Accuracy of 320-detector row nonsubtracted and subtracted volume CT angiography in evaluating small cerebral aneurysms
Three-dimensional time-of-flight MR angiography: Applications in the abdomen and thorax<...
Sugar Alcohols - DrugBank
Whole Body Magnetic Resonance Angiography in Ischemic Patients - Full Text View - ClinicalTrials.gov
Turkish Neurosurgery
Videodensitometric quantitation of stenosis: In vitro and in vivo validation<...
Carotid Endarterectomy
Carotid Magnetization-Prepared Rapid Acquisition With Gradient-Echo Signal Is Associated With Acute Territorial Cerebral...
Flow artifact in the anterior communicating artery resembling aneurysm by Deepak Takhtani, Sathish Kumar Dundamadappa et al.
Publications Research Group: Cognitive Neuroimaging | Max Planck Institute for Biological Cybernetics Tübingen
Papers with the keyword Pancrease MR | Read by QxMD
Buy cheap Aciclovir 200 mg / Neurontin lawsuit 2008
The influence of different diagnostic imaging and interventional repair techniques on mortality rate in aortic aneurysm patients
endovascular | Physicians Weekly for Medical News, Journals & Articles
Review of Global Medicine and Healthcare Research
Vascular Malformation - Clinical MRI
Publications by our team
OEC 9400 C-Arm - MEDICAL OUTFITTERS X-RAY
β-Blockers and asthma increased the risk for anaphylaxis during contrast media studies | Annals of Internal Medicine | American...
Member | Natural Philosophers Database
Maximum intensity projection | Radiology Reference Article | Radiopaedia.org
Doppler sonography, angiotomography and digital sustraction angiography in carotid stenosis
Tailored optimization of pediatric body MR angiography for successful outcomes in thoracic applications<...
ECR 2014 - published the Research on CO2 Angiography of lower limb - Angiodroid
Patent US8442288 - Method and apparatus for processing three-dimensional digital mesh image ... - Google Patents
Serval - The use of procedural knowledge in simple addition and subtraction problems
Circulatory, Vascular and Cardiac sub-cluster 20
Research Projects | Computer Science Department at Princeton University
Institute of Chemistry - PEOPLE - Ivan ZELKO
Most recent papers with the keyword Interventional neuro radiology | Read by QxMD
Writing Subtraction Equations | Education.com
Manufacturing - 3d Scanners and 3d Scanning Technology | 3D Digital Corp
Amazing Tpn Worksheet Example Images - Printable activities - greenbarn.us - greenbarn.us
Analysis of SSH-MOS subtraction efficiency. A) Cclap-ps | Open-i
PCR Subtraction
Flow void | Radiology Reference Article | Radiopaedia.org
Category:Digital Object Identifier - Wikimedia Commons
SLPe-150D Digital Sonifier Cell Disruptor
Velp Scientifica™ MULTISTIRRER DIgital Series Velp Scientifica™ MULTISTIRRER DIgital Series
Collection Group: Digital Collections / Duke Digital Repository
Collection Group: Digital Collections / Duke Digital Repository
Berkeley Nucleonics Corp.
Great Britain - TeacherVision
Digital binary option
Digital and IT Law - Sharon Givoni Consulting
DICOM - Wikipédia, a enciclopédia livre
DF = Digital Fluoroscopy (retired). *DG = Diaphanography. *DM = Digital Microscopy. *DS = Digital Subtraction Angiography ... DICOM, abreviação de Digital Imaging and Communications in Medicine (ou comunicação de imagens digitais em medicina), é um ...
Microangiography
Computed Tomography Angiography Intravenous digital subtraction angiography "microangiography". The Free Dictionary. Takeshita ... "Micro-angiography for tumor vessel imaging" (PDF). Retrieved 2009-06-10. Bollinger A, Amann-Vesti BR (June 2007). "Fluorescence ... Microangiography (/ˌmaɪkroʊˌændʒiˈɒɡrəfi/ MY-kro-AN-jee-OG-rə-fee) is a type of angiography that consists of the radiography of ... While most other types of angiography cannot produce images of vessels smaller than 200 µm in diameter, microangiography does ...
Erectile dysfunction
In Digital Subtraction Angiography (DSA), the images are acquired digitally.[citation needed] Magnetic resonance angiography ( ... Magnetic resonance angiography uses magnetic fields and radio waves to provide detailed images of the blood vessels. The doctor ...
Carotid-cavernous fistula
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 ...
Kinetic imaging
Comparison to Digital Subtraction Angiography". Radiology. 290 (1): 246-253. doi:10.1148/radiol.2018172927. ISSN 0033-8419. ... "Digital Variance Angiography as a Paradigm Shift in Carbon Dioxide Angiography". Investigative Radiology. 54 (7): 428-436. doi: ... See also: Digital variance angiography The diagnostic value of radiographic images is limited by image quality, which can be ... Digital variance angiography X-ray imaging Fluoroscopy Signal-to-noise ratio Szigeti, K.; Máthé, D.; Osváth, S. (2014-10-01). " ...
Vertebral artery dissection
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 ... When MR angiography is used, the best results are achieved in the T1 setting using a protocol known as "fat suppression". ... Angiography also does not directly demonstrate the blood in the vessel wall, as opposed to more modern modalities. The only ...
Technicare
The DR 960 was introduced in 1982 as a digital subtraction angiography device. Rather than injecting contrast material into an ... A digital image was acquired without contrast and one with, and the images subtracted from each other leaving the arterial ... essentially a digital x-ray that was produced by moving the body through the gantry with the x-ray tube stationary. This ...
Northern Westchester Hospital
In 1989, capability for magnetic resonance imaging (MRI) and digital subtraction angiography (DSA) was introduced. Northern ... Radiology & Medical Imaging: NWH uses digital imaging techniques to provide accurate test results including MRI, PET/CT scans, ... CAT scans, ultrasounds and digital X-rays. Stereotactic Radiosurgery: Offering both the Gamma Knife and the Novalis ...
Artery of Adamkiewicz
... validated by digital subtraction angiography". AJNR. 27 (7): 1565-72. PMID 16908582. Greathouse, David G.; Halle, John S.; ... "MR Angiography and CT Angiography of the Artery of Adamkiewicz: Noninvasive Preoperative Assessment of Thoracoabdominal Aortic ... Nijenhuis RJ, Mull M, Wilmink JT, Thron AK, Backes WH (2006). "MR angiography of the great anterior radiculomedullary artery ( ... Its location can be identified with computed tomographic angiography. It is named for Albert Wojciech Adamkiewicz. Milen, Mark ...
Intracranial aneurysm
Comparison of computed tomography angiography with digital subtraction angiography in the assessment of clipped intracranial ... CT Angiography and MR Angiography for Detection-Prospective Blinded Comparison in a Large Patient Cohort". Radiology. 219 (3): ... Once suspected, intracranial aneurysms can be diagnosed radiologically using magnetic resonance or CT angiography.[16] But ...
Anatomy
... by Digital Subtraction Imaging". Journal of Zoo and Wildlife Medicine. 30 (2): 235-241. PMID 10484138.. ... "Magnetic Resonance Angiography (MRA)". Johns Hopkins Medicine.. *^ "Angiography". National Health Service. Retrieved 29 April ... Angiography using X-rays or magnetic resonance angiography are methods to visualize blood vessels.[8][9][10][11] ... Gribble N, Reynolds K (1993). "Use of Angiography to Outline the Cardiovascular Anatomy of the Sand Crab Portunus pelagicus ...
Anatomy
... by Digital Subtraction Imaging". Journal of Zoo and Wildlife Medicine. 30 (2): 235-241. PMID 10484138. "Magnetic Resonance ... Angiography using X-rays or magnetic resonance angiography are methods to visualize blood vessels. The term "anatomy" is ... "Angiography". National Health Service. Retrieved 29 April 2014. Dorit, R. L.; Walker, W. F.; Barnes, R. D. (1991). Zoology. ... Gribble N, Reynolds K (1993). "Use of Angiography to Outline the Cardiovascular Anatomy of the Sand Crab Portunus pelagicus ...
Chronic thromboembolic pulmonary hypertension
Today, the gold standard imaging remains invasive pulmonary angiography (PAG) using native angiograms or a digital subtraction ... of ventilation/perfusion scanning and multidetector computed tomography pulmonary angiography with pulmonary angiography". ... Both V/Q scanning and modern multidetector CT angiography (CTPA) may be accurate methods for the detection of CTEPH, with ... scan and specific diagnostic signs for CTEPH seen by multidetector computed tomography angiography (MDCT), magnetic resonance ...
Aortoiliac occlusive disease
Another technique is digital subtraction angiography which allows verification of the diagnosis and endovascular treatment in a ... Angiography provides important information regarding the perfusion and patency of distal arteries (e.g. femoral artery). The ... However, angiography should only be used if symptoms warrant surgical intervention. Treatment involves revascularization ...
Embolization
The position of the correct artery or vein supplying the pathology in question is located by digital subtraction angiography ( ...
Claudio J. Schonholz
... with professors Michel Tonnelier and Francis Besse and helped them with the development of digital subtraction angiography. Dr ... Following it, he did residency in diagnostic radiology as well as in angiography and interventional radiology at the Centre ...
Cerebral vasculitis
Techniques such as conventional digital subtraction angiography (DSA) and magnetic resonance imaging (MRI) are used to find and ... Cerebral angiography and magnetic resonance imaging, family medical history, symptoms, a complete physical examination, and ...
Hybrid operating room
Digital subtraction angiography (DSA) is a two-dimensional imaging technique for the visualization of blood vessels in the ... "Current Status of Digital Angiography in Vascular Imaging". Radiologic Clinics of North America. 33 (1): 1-14. PMID 7824692. " ... Rotational angiography is a technique to acquire CT-like 3D images intraoperatively with a fixed C-Arm. To do that, the C-Arm ... Rotational angiography visualizes the bronchial tree in 3D during the procedure. The air thereby serves as a 'natural' contrast ...
Dr. Ziauddin Hospitals
The services provided at hospitals are X-Ray and Ultrasound, MRI, CT scan, Digital Subtraction Angiography, Colour Doppler ...
Investigative Radiology
... digital subtraction angiography, and new technologies. An additional focus is that of contrast media research, primarily for ...
Carotid ultrasonography
Digital subtraction angiography (DSA), magnetic resonance angiography (MRA), and CT angiography (CTA) are confirmatory imaging ...
Cholangiocarcinoma
... comparison with intraarterial digital subtraction angiography". World Journal of Surgery. 27 (3): 278-83. doi:10.1007/s00268- ... with contrast-enhanced three-dimensional fast imaging with steady-state precession magnetic resonance angiography: ...
Cerebral edema
... or digital subtraction angiography (DSA) may be necessary. MRI is particularly useful as it can differentiate between cytotoxic ... However, CT scan can be limited in determining the exact cause of cerebral edema in which cases, CT angiography (CTA), MRI, ...
Interventional radiology
Angiography: Sometimes referred to as traditional angiography, catheter angiography or digital subtraction angiography (DSA.) A ... Plaque and blood flow can be evaluated using ultrasound, CT Angiography, MR angiography and catheter based angiography to ... created may be modified by computer to better visualize the structures as is in the case with digital subtraction angiography, ... Angiography provides the basis for all endovascular therapy. Balloon Angiography: The foundational IR procedure. Small balloons ...
Interventional neuroradiology
Charles Mistretta in 1979 invented digital subtraction angiography (DSA), the technique currently in use. It consists of ... Diagnostic angiography Cerebral angiography was developed by Portuguese neurologist Egas Moniz at the University of Lisbon, in ... He performed the first brain angiography in Lisbon in 1927 by injecting an iodinated contrast medium into the internal carotid ... In 1964, the Norwegian radiologist Per Amudsen was the first to perform a complete brain angiography with a transfemoral ...
DSA
... an upcoming package announced by the European Commission Digital subtraction angiography, a fluoroscopy technique Distinguished ... US Digital Signature Algorithm, a cryptographic standard for digital signatures Directory System Agent, an IT standard, part of ... a per diem contribution for UNDP staff members Dental surgery assistant Digital Services Act, ...
Tolosa-Hunt syndrome
MRI scans of the brain and orbit with and without contrast, magnetic resonance angiography or digital subtraction angiography ...
Arterial embolism
... to diagnose myocardial infarction Arteriography of the affected extremity or organ Digital subtraction angiography is useful in ...
Nasopharyngeal angiofibroma
... digital subtraction angiography) of carotid artery to see the extension of tumors and feeding vessels[citation needed] Antro- ...
Cholangiocarcinoma
... comparison with intraarterial digital subtraction angiography". World Journal of Surgery. 27 (3): 278-83. doi:10.1007/s00268- ... with contrast-enhanced three-dimensional fast imaging with steady-state precession magnetic resonance angiography: ...
Angioscopy
Angiography. *Digital subtraction angiography *Cerebral angiography. *Aortography. *Fluorescein angiography. *Radionuclide ...
Hemofiltration
Angiography. *Digital subtraction angiography *Cerebral angiography. *Aortography. *Fluorescein angiography. *Radionuclide ...
Surgery
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 ...
Glenn procedure
Angiography. *Digital subtraction angiography *Cerebral angiography. *Aortography. *Fluorescein angiography. *Radionuclide ...
Ankle-brachial pressure index
Angiography. *Digital subtraction angiography *Cerebral angiography. *Aortography. *Fluorescein angiography. *Radionuclide ... Society for Cardiovascular Angiography and, Interventions; Society of Interventional, Radiology; Society for Vascular, Medicine ...
Inferior vena cava filter
Angiography. *Digital subtraction angiography *Cerebral angiography. *Aortography. *Fluorescein angiography. *Radionuclide ...
Blalock-Taussig shunt
Angiography. *Digital subtraction angiography *Cerebral angiography. *Aortography. *Fluorescein angiography. *Radionuclide ...
Angioplasty
Angiography. *Digital subtraction angiography *Cerebral angiography. *Aortography. *Fluorescein angiography. *Radionuclide ...
Vascular surgery
Angiography. *Digital subtraction angiography *Cerebral angiography. *Aortography. *Fluorescein angiography. *Radionuclide ... A recent trend in the United States is the stand-alone day angiography facility associated with a private vascular surgery ... Arterial and venous disease treatment by angiography, stenting, and non-operative varicose vein treatment sclerotherapy, ...
Impedance phlebography
Angiography. *Digital subtraction angiography *Cerebral angiography. *Aortography. *Fluorescein angiography. *Radionuclide ...
膽管癌 - 维基百科,自由的百科全书
... comparison with intraarterial digital subtraction angiography. World J Surg. 2003, 27 (3): 278-83. PMID 12607051. doi:10.1007/ ... with contrast-enhanced three-dimensional fast imaging with steady-state precession magnetic resonance angiography: ...
Angiography
Major complications in cerebral angiography such as in digital subtraction angiography or contrast MRI are also rare but ... If digital subtraction angiography is used instead, the risks are considerably reduced because the catheter does not need to be ... For all structures except the heart, the images are usually taken using a technique called digital subtraction angiography or ... Another increasingly common angiographic procedure is neuro-vascular digital subtraction angiography in order to visualise the ...
Earl Wood
... analog subtraction angiography for the assessment of cardiac structures via video fluoroscopy and the earliest predecessor (The ... Sass, DJ; Nolan, AC; Wood, EH (January 1974). "Digital computer analysis of circulatory and respiratory pressures in water- ... analog subtraction angiography, and eventually the Dynamic Spatial Reconstructor (DSR), a predecessor to modern high speed ... methods for the digital conversion of analog physiologic signals allowing for computer-based monitoring of vascular signals ( ...
Carbon dioxide angiography
With the advent of digital subtraction angiography (DSA) technique in 1980s, CO2 has evolved into a safe and useful alternative ... J. Caridi, I. Hawkins, S. Klioze, R. LeVeen, "Carbon Dioxide Digital Subtraction Angiography: The Practical Approach", ... CO2 angiography is intended only for peripheral procedures. In case of procedures in the arterious system it is allowed to ... Carbon dioxide angiography is a diagnostic radiographic technique in which a carbon dioxide (CO2) based contrast medium is used ...
Spectral imaging (radiography)
Lewin, J.M.; Isaacs, P.K.; Vance, V.; Larke, F.J. (2003). "Dual-energy contrast-enhanced digital subtraction mammography: ... "Cervical and cranial computed tomographic angiography with automated bone removal: Dual energy computed tomography versus ... "New contrast media designed for X-ray energy subtraction imaging in digital mammography". Investig. Radiol. 38 (9): 602-608. ... "Physical characterization of a scanning photon counting digital mammography system based on Si-strip detectors". Med. Phys. 34 ...
Digital subtraction angiography - Wikipedia
"Introduction to Digital Subtraction Angiography". The cost effectiveness of digital subtraction angiography in the diagnosis of ... Hence the term "digital subtraction angiography". Subtraction angiography was first described in 1935 and in English sources in ... Intravenous digital subtraction angiography (IV-DSA) is a form of angiography which was first developed in the late 1970s. IV- ... DAlotto C, Pelz DM, Rankin RN (September 1985). "A comparison of angiography, intravenous digital subtraction angiography and ...
Histogram-based image registration for digital subtraction angiography | SpringerLink
... generalized framework for histogram-based similarity measures is presented and applied to the image-enhancement task in digital ... subtraction angiography (DSA). The class of differentiable, strictly... ... L. V. Tran and J. Sklansky, Flexible mask subtraction for digital angiography, IEEE Trans. on Medical Imaging 11 (1992) 407 and ... Buzug T.M., Weese J., Lorenz C., Beil W. (1997) Histogram-based image registration for digital subtraction angiography. In: Del ...
Motion compensated digital subtraction angiography
Digital subtraction angiography, whether based on traditional X-ray or MR, suers from patient motion artifacts. Until now, the ... Motion compensated digital subtraction angiography. Hemmendorff, M. Linköping University, Department of Electrical Engineering ... Motion Compensation, Motion Estimation, Digital Subtraction Angiography, Aperture Problem, Pixelshift, Automatic, Quadrature ... time can be significantly reduced in ordinary peripheral angiographies and that the number of retakes due to large or local ...
Digital subtraction angiography | Define Digital subtraction angiography at Dictionary.com
Digital subtraction angiography definition, a computerized x-ray technique in which arteries are visualized following injection ... digital subtraction angiography. in Medicine. digital subtraction angiography. .css-1khtv86{font-size:20px;color:#c0b5b5;}.css- ... digital subtraction angiography. .css-7w6khc{padding-top:20px;}. .css-1oucjfz{list-style-type:none;line-height:22px;}. *digital ... digital subtraction angiography. .css-1g5b64m{padding:16px 0;}. .css-1fvpz4m{margin-right:32px;outline:none;border:none;padding ...
Pulmonary Angiography: Overview, Lung Scintigraphy, Digital Subtraction Pulmonary Angiography
Digital Subtraction Pulmonary Angiography. Digital subtraction pulmonary angiography (DSPA) is the criterion standard or ... digital subtraction pulmonary angiography (DSPA), pulmonary computed tomography angiography (PCTA), and pulmonary magnetic ... Because digital subtraction pulmonary angiography (DSPA) is perceived to be invasive and requires the use of iodinated contrast ... Pulmonary angiography. Digital subtraction pulmonary angiogram shows splaying of the arterial branches of the right upper lobe ...
List of Digital Subtraction Angiography Medications (7 Compared) - Drugs.com
Compare risks and benefits of common medications used for Digital Subtraction Angiography. Find the most popular drugs, view ... What is Digital Subtraction Angiography: Digital Subtraction Angiography (DSA) is a type of fluoroscopy technique used in ... Medications to treat Digital Subtraction Angiography. The following list of medications are in some way related to, or used in ... Looking for answers? Ask a question or go join the digital subtraction angiography support group to connect with others who ...
Digital subtraction angiography
... (DSA) is a technique used in interventional radiology to clearly visualize blood vessels ... Digital Subtraction Angiography (DSA) is a technique used in interventional radiology to clearly visualize blood vessels in a ... It uses material from the Wikipedia article "Digital_subtraction_angiography". A list of authors is available in Wikipedia. ... In traditional angiography images are acquired by exposing an area of interst with time-controlled x-rays while injecting ...
WikiGenes - Angiography, Digital Subtraction
Associations of Angiography, Digital Subtraction with chemical compounds. *Digital subtraction angiography with a gadolinium ... High impact information on Angiography, Digital Subtraction. *Transvenous digital subtraction angiography was used before ... Anatomical context of Angiography, Digital Subtraction. *Associations of Angiography, Digital Subtraction with chemical ... routine and digital subtraction angiography, and phlebography [35].. *A combination of digital subtraction angiography and a ...
Digital subtraction angiography: current clinical applications. | Stroke
Digital Subtraction Angiography | Philips Healthcare
... automatic examination pre-sets support a smooth and efficient workflow in angiography examinations. ... With Philips Digital Subtraction Angiography (DSA) automatic examination pre-sets support a smooth and efficient workflow in ... angiography examinations. To extend flexibility and safety during DSA examinations the CombiDiagnost R90 table is enhanced with ...
Parametric color coding of digital subtraction angiography in the evaluation of carotid cavernous fistulas. - PubMed - NCBI
Assessment of regional wall motion abnormality without contrast medium by digital subtraction angiography using Fourier...
Digital subtraction angiography with clinical correlation | The Journal of the American Osteopathic Association
Digital subtraction angiography with clinical correlation. The Journal of the American Osteopathic Association, February 1985, ... Osborn R. Digital subtraction angiography with clinical correlation. J Am Osteopath Assoc 1985;85(2):77. doi: 10.7556/jaoa. ... Digital subtraction angiography with clinical correlation You will receive an email whenever this article is corrected, updated ...
Europe Digital Subtraction Angiography(DSA)Market Report 2016
... means the sales value of Digital Subtraction Angiography(DSA? This report studies sales (consumption) of Digital Subtraction ... Angiography(DSA)in Europe market, especially in Germany, UK, France, Russia, Italy, Benelux and Spain, focuses on top players ... means the sales volume of Digital Subtraction Angiography(DSA? Revenue, ... 5.3 UK Digital Subtraction Angiography(DSA)Sales and Market Share by Type. 5.4 UK Digital Subtraction Angiography(DSA)Sales and ...
US5712895A - Rotational digital subtraction angiography phantom
- Google Patents
3D digital subtraction angiography image processing apparatus US20050046644A1 (en) * 2003-08-28. 2005-03-03. Satoru Ohishi. 3D ... Rotational digital subtraction angiography phantom Download PDF Info. Publication number. US5712895A. US5712895A US08783503 ... Rotational digital subtraction angiography phantom Applications Claiming Priority (1). Application Number. Priority Date. ... US08783503 1997-01-14 1997-01-14 Rotational digital subtraction angiography phantom Expired - Fee Related US5712895A (en) ...
Intraarterial digital subtraction angiography for definitive diagnosis of intracranial aneurysms. | American Journal of...
Comparisons between digital subtraction angiography and conventional angiography have frequently been made in the radiologic ... Intraarterial digital subtraction angiography for definitive diagnosis of intracranial aneurysms.. H Touho, J Karasawa, T ... Intraarterial digital subtraction angiography for definitive diagnosis of intracranial aneurysms.. H Touho, J Karasawa, T ... Intraarterial digital subtraction angiography for definitive diagnosis of intracranial aneurysms.. H Touho, J Karasawa, T ...
Multislice computerized tomography angiography in the evaluation of intracranial aneurysms: a comparison with intraarterial...
It performs better than that reported for single-slice CT angiography. Introduction of eight- and especially 16-row MSCT ... Multislice CT angiography is an accurate and robust noninvasive screening test for intracranial aneurysms. ... angiography will provide further progression through thinner slices, a l … ... a comparison with intraarterial digital subtraction angiography J Neurosurg. 2003 Apr;98(4):828-36. doi: 10.3171/jns.2003.98. ...
Color-Coded Digital Subtraction Angiography: The End of a Monochromatic Era? | American Journal of Neuroradiology
Color-Coded Digital Subtraction Angiography: The End of a Monochromatic Era? Message Subject (Your Name) has sent you a message ... Intra-arterial digital subtraction angiography. In: Benndorf G ed. Dural Cavernous Sinus Fistulas: Diagnosis and Endovascular ... Parametric imaging using digital subtraction angiography. Br J Radiol 1986;59:7-11. ... Color-Coded Digital Subtraction Angiography: The End of a Monochromatic Era?. G. Benndorf ...
digital subtraction angiography - CIRS
Moya moya disease: use of digital subtraction angiography in its diagnosis
Fourteen patients suspected of having Moya Moya disease underwent intravenous digital subtraction angiography (DSA), and the ... Moya moya disease: use of digital subtraction angiography in its diagnosis Radiology. 1985 Oct;157(1):107-11. doi: 10.1148/ ... Fourteen patients suspected of having Moya Moya disease underwent intravenous digital subtraction angiography (DSA), and the ...
US20100034446A1 - System and Method for Coronary Digital Subtraction Angiography
- Google Patents
A method and system for extracting coronary vessels fluoroscopic image sequences using coronary digital subtraction angiography ... Digital subtraction angiography JP2018501008A (en) * 2015-01-05. 2018-01-18. コーニンクレッカ フィリップス エヌ ヴェKoninklijke Philips N.V.. ... Digital subtraction angiography for 3D diagnostic imaging US6154518A (en) * 1996-10-28. 2000-11-28. General Electric Company. ... Digital subtraction angiography for 3D diagnostic imaging US6154518A (en) * 1996-10-28. 2000-11-28. General Electric Company. ...
A framework for spacial-variant thresholding of digital subtraction angiography images | (2005) | Sang | Publications | Spie
IA-DSA - imaging and intra-arterial digital subtraction angiography | AcronymAttic
IA-DSA is defined as imaging and intra-arterial digital subtraction angiography rarely. ... IA-DSA stands for imaging and intra-arterial digital subtraction angiography. ... How is imaging and intra-arterial digital subtraction angiography abbreviated? ... arterial-digital-subtraction-angiography-(IA_DSA).html,IA-DSA,/a,. Citations. *MLA style: "IA-DSA." Acronym Attic. 2018. ...
intra-arterial digital subtraction angiography 的翻译结果--cnki翻译助手
intra-arterial digital subtraction angiography 的翻译结果:动脉数字减影血管造影;动脉法数字减 ... intra-arterial digital subtraction angiography. Non-selective intra-arterial digital subtraction angiography for the assessment ... MR angiography versus intra-arterial digital subtraction angiography of the lower extremities: activity-based cost analysis ... We compared magnetic resonance angiography(MRA)and intra-arterial digital subtraction angiography(IA-DSA)in 20
Digital subtraction angiography of the head and neck: experience in a community hospital over a 9-month period | The Journal of...
Digital subtraction angiography of the head and neck: experience in a community hospital over a 9-month period. The Journal of ... Digital subtraction angiography of the head and neck: experience in a community hospital over a 9-month period ... Digital subtraction angiography of the head and neck: experience in a community hospital over a 9-month period ... Stoecker R, Lowry B. Digital subtraction angiography of the head and neck: experience in a community hospital over a 9-month ...
Gadolinium-enhanced magnetic resonance angiography in renal artery stenosis: comparison with digital subtraction angiography |...
... reviewed the digital subtraction angiography and magnetic resonance angiography images respectively. Digital subtraction ... Key words: Angiography, digital subtraction; Gadolinium; Magnetic resonance angiography; Renal artery obstruction; Sensitivity ... Records of patients who underwent magnetic resonance angiography as well as digital subtraction angiography for assessment of ... Gadolinium-enhanced magnetic resonance angiography in renal artery stenosis: comparison with digital subtraction angiography ...
Digital subtraction angiography with intravenous injection: assessment of 1,000 carotid bifurcations. - Semantic Scholar
Digital subtraction angiography (DSA) with intravenous contrast injection was performed on 500 consecutive adult patients and ... The significance of internal carotid artery occlusion shown by i.v. digital subtraction angiography.. *J H Warwick Pexman, C H ... Improvement of cervicocranial i.v. digital subtraction angiography with pixel remasking and cardiac gating.. *J H Warwick ... Digital subtraction angiography (DSA) with intravenous contrast injection was performed on 500 consecutive adult patients and ...
Comparing computed tomography (CT) angiography versus digital subtraction angiography for the screening of traumatic...
Comparing computed tomography (CT) angiography versus digital subtraction angiography for the screening of traumatic ... Digital subtraction angiography (DSA) has been the gold standard for diagnosing traumatic pseudoaneurysms. Its use as a ... One traumatic pseudoaneurysm was missed on computed tomography angiography (CTA) because of a poor quality scan. The average ...
Anatomical variants of the arterial vascularization of the liver: computed tomography-digital subtraction angiography...
... computed tomography-digital subtraction angiography correlations - Il Giornale Italiano di Radiologia Medica 2019 Maggio-Giugno ... Anatomical variants of the arterial vascularization of the liver: computed tomography-digital subtraction angiography ... computed tomography-digital subtraction angiography correlations. G Ital Radiol Med 2019;6:268-74. DOI: 10.23736/S2283-8376.19. ... variants that are possible and it is the objective of this article to classify them using digital subtraction angiography and ...
Aortoiliac and lower extremity arteries assessed with 16-detector row CT angiography: prospective comparison with digital...
... angiography with conventional digital subtraction angiography (DSA) as the reference standard in the assessment of aortoiliac ... angiography with conventional digital subtraction angiography (DSA) as the reference standard in the assessment of aortoiliac ... Aortoiliac and lower extremity arteries assessed with 16-detector row CT angiography: prospective comparison with digital ... prospective comparison with digital subtraction angiography. Radiology, 236(3):1083-93. ...
Comparison with digital subtractionDiagnosisIntra-arterial digital subtractionCerebralVascularAbstractUnderwent intravenous digital subAneurysmMagneticFluoroscopyStenosisAssessmentRadiographyIntravenous digital subtractionPulmonary angiographyVesselsIVDSADuplexCoronary arteriesIntracranial aneurysmsSPIECardiacDiagnosticNoninvasiveTomographicInjectionTechniqueVersus digitalRotational angiography1985DetectionRadiationVenousPatients who underwentInterventionalSensitivityClinical applications2016Hepatocellular carcinomaAdvantagesSelectiveSubarachnoid hemorrhage
Comparison with digital subtraction2
- Multidetector CT angiography of the aortoiliac system and lower extremities: a prospective comparison with digital subtraction angiography ," American Journal of Roentgenology, vol. (thefreedictionary.com)
- Banaei A, Norouzi R, Abedi Firouzjah R, Elahi M. Evaluation and Assessment of Doppler Ultrasonography Results in Comparison with Digital Subtraction Angiography in Diagnosis of Internal Carotid Artery Stenosis. (ac.ir)
Diagnosis11
- The cost effectiveness of digital subtraction angiography in the diagnosis of cerebrovascular disease (PDF). (wikipedia.org)
- The applications of digital subtraction angiography (DSA) in neurologic diagnosis have been evolving as clinical experience with this technology accumulates. (ahajournals.org)
- Intraarterial digital subtraction angiography for definitive diagnosis of intracranial aneurysms. (ajnr.org)
- Magnification radiography and stereography using intraarterial digital subtraction angiography were done to obtain a more precise diagnosis. (ajnr.org)
- Important advantages of intraarterial digital subtraction angiography include reduced procedural time and decreased contrast agent burden, factors that will ensure broader application of this procedure for definitive diagnosis of intracranial aneurysms as experience with the technique accumulates. (ajnr.org)
- CT angiography with Digital subtraction angiography is the gold standard in the diagnosis but venous colour Doppler ultrasound study is also useful for the diagnosis of venous aneurysm. (thefreedictionary.com)
- Diagnosis of intracranial aneurysms: accuracy of MR angiography at 0.5 T. (semanticscholar.org)
- 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)
- In the present study, we discuss the accuracy of digital subtraction angiography (DSA) in diagnosis of thrombus in the common carotid artery and its role in the medical management of this disorder. (clinicalimagingscience.org)
- This review aims to review the literature on coronary CT scanning and digital subtraction angiography, their clinical applications, techniques and comparative value in coronary artery assessment and diagnosis. (essaysamurai.co.uk)
- Rapid diagnosis of thoracic aortic transection using intravenous digital subtraction angiography. (readabstracts.com)
Intra-arterial digital subtraction8
- Twenty years later, intra-arterial digital subtraction angiography (DSA) not only still exists but also has become an indispensable imaging technique for endovascular treatment (EVT) methods that have largely replaced surgical techniques for vascular disorders. (ajnr.org)
- The experience of use of intra-arterial digital subtraction angiography (IADSA) was reported, on 100 cases with intracranial diseases. (cnki.net)
- We compared magnetic resonance angiography(MRA)and intra-arterial digital subtraction angiography (IA-DSA)in 20 cases with intracranial aneurysms. (cnki.net)
- 20 cases underwent intra-arterial digital subtraction angiography (DSA) within a week of CTA examination. (cnki.net)
- Intra-arterial digital subtraction angiography of vascular lesions of the spinal cord. (cnki.net)
- Follow-up intra-arterial digital subtraction angiography in 25 patients at a mean follow-up period of 13.1 months (range 3-29 months) showed restenosis in 5/36 (13.9%) lesions which could be successfully redilated. (cnki.net)
- In this study, we aimed to clarify the incidence of co-existing vascular abnormalities, especially unruptured cerebral aneurysms by reviewing selective intra-arterial digital subtraction angiography (DSA) images in PICH patients. (cnki.net)
- In order to evaluate the sensitivity and specificity of magnetic resonance angiography (MRA) in spontaneous subarachnoid haemorrhage, 14 patients with recent haemorrhage verified by CT or lumbar puncture were investigated with both selective intra-arterial digital subtraction angiography (IA-DSA) and MRA by two independent teams, each having the same preangiographic information. (semanticscholar.org)
Cerebral13
- In 1927, Egaz Moniz 1 , 2 introduced cerebral angiography by using the x-ray absorption of intravascular contrast. (ajnr.org)
- Providing superior spatial resolution for vascular imaging that was continuously increased with time, conventional angiography has played a major role in diagnosing steno-occlusive diseases in cerebral, coronary, and peripheral vascular territories. (ajnr.org)
- Mainly due to the inherent invasiveness and the potential risks of intra-arterial catheterization and contrast injections causing permanent neurologic deficits, those proponents of less "dangerous" vascular imaging loudly prophesized the near end of cerebral angiography as diagnostic tool. (ajnr.org)
- 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)
- Comparison of hand injection with mechanical injection for digital subtraction selective cerebral angiography. (openrepository.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)
- BACKGROUND: Computed tomographic angiography (CTA) has recently emerged as a non-invasive alternative to digital subtraction angiography (DSA) for the detection of residual cerebral aneurysms (RA). (lvhn.org)
- The Chinese Cerebral Aneurysms Survey is a continuing prospective study to evaluate the effectiveness of unenhanced, three-dimensional time-of-flight magnetic resonance angiography (3D-TOF-MRA) with volume rendering (VR) at 3-T in the detection of intracranial aneurysms. (clinicaltrials.gov)
- The first author (Y.K.) has developed a method to obtain a thorough understanding of the anatomical relationships of a middle cerebral artery (MCA) aneurysm as follows: the anteroposterior view is obtained with a three-dimensional (3D) digital subtraction angiography (3D-DSA) or 3D computed tomography angiography (3D-CTA). (scientificscholar.in)
- During nonselective angiography, with the mouth closed, there was strong sequential opacification of the external carotid arteries, maxillary arteries, maxillary retia mirabilia, cerebral arterial circle, and basilar artery. (avmi.net)
Vascular8
- X-ray−based catheter angiography has, for a long time, been the dominant diagnostic tool for vascular lesions in the human body. (ajnr.org)
- Although digital subtraction angiography (DSA) is the gold standard for detecting arterial vascular injury, it is an invasive procedure with potential complications, such as puncture-site haematoma, iatrogenic vascular damage and embolic complications, including stroke. (scielo.org.za)
- Background The precise understanding of the angioarchitecture of spinal vascular malformations (SVMs) is often difficult to reach with conventional digital subtraction angiography (DSA). (bmj.com)
- Time-resolved three-dimensional (3D) digital subtraction angiography (DSA)- i.e. , four-dimensional (4D)-DSA-is a recently developed angiographic imaging modality that can provide quantitative information on blood flow within a 3D vascular volume [ 1 ]. (springeropen.com)
- An anteroposterior digital subtraction image shows a simultaneous epidural and vascular contrast pattern ( Figure 1 B ). Therefore, after redirecting block needle and injecting contrast, we checked the epidurogram without intravascular pattern. (anesthpain.com)
- A tailored approach for evaluating patients with peripheral vascular disease has been developed using intravenous digital subtraction angiography (IV DSA). (elsevier.com)
- One hundred patients with ocular occlusive vascular disease were studied by intravenous digital subtraction angiodraphy (IV DSA). (jamanetwork.com)
- Angiography of the vascular system of the brain. (tabers.com)
Abstract2
- abstract = "The television camera comprises an important link in the imaging chain of digital subtraction angiography equipment. (elsevier.com)
- abstract = "Digital subtraction angiography through the central artery of the ear was performed to show elastase-induced aneurysms in 34 rabbits. (elsevier.com)
Underwent intravenous digital sub2
- Fourteen patients suspected of having Moya Moya disease underwent intravenous digital subtraction angiography (DSA), and the findings from nine of these patients were reviewed and analyzed. (nih.gov)
- To define the exact incidence of late degeneration, 32 patients underwent intravenous digital subtraction angiography (IVDSA) and/or a Duplex scan more than 3 years after human umbilical vein (HUV) grafting. (kuleuven.be)
Aneurysm1
- 3D-DSA or 3D computed tomography angiography images visualizing the neck of the aneurysm should be obtained in combination with images obtained from the standard oblique angle. (scientificscholar.in)
Magnetic13
- It is being replaced by computed tomography angiography (CTA), which can produce 3D images through a test which is less invasive and stressful for the patient, and magnetic resonance angiography (MRA), which avoids X-rays and nephrotoxic contrast agents. (wikipedia.org)
- Radiologic modalities used for assessment include lung scintigraphy, digital subtraction pulmonary angiography (DSPA), pulmonary computed tomography angiography (PCTA), and pulmonary magnetic resonance angiography (PMRA). (medscape.com)
- To evaluate the accuracy of gadolinium-enhanced magnetic resonance angiography in assessing renal artery stenosis compared to catheter digital subtraction angiography. (hkmj.org)
- Records of patients who underwent magnetic resonance angiography as well as digital subtraction angiography for assessment of renal artery stenosis from January 2003 to December 2005 were reviewed. (hkmj.org)
- Each of the two experienced interventional and body magnetic resonance radiologists, who were blinded to the results, reviewed the digital subtraction angiography and magnetic resonance angiography images respectively. (hkmj.org)
- One of the arteries was previously stented and could not be assessed with magnetic resonance angiography due to severe artefacts. (hkmj.org)
- magnetic resonance angiography overestimated the degree of stenosis in 8% and underestimated it in 3% of them. (hkmj.org)
- Our experience suggested that gadolinium-enhanced magnetic resonance angiography is a sensitive non-invasive modality useful in the assessment of clinically significant renal artery stenosis. (hkmj.org)
- 8.) Paul J Nederkoorn, Yolanda Vander Graff, Myriam Hunink MG: Duplex ultrasound and magnetic resonance angiography compared with digital subtraction angiography in carotid artery stenosis: A Systematic Review: Stroke 2003;34:1324-1332. (thefreedictionary.com)
- Traditionally magnetic resonance angiography (MRA) of the carotid arteries has been performed with time-of-flight (TOF) methods, which are limited by flow related artifacts. (iospress.com)
- Contrast enhanced MRA using an intravenously administered gadolinium agent can overcome the limitations of TOF MR A. One contrast enhanced MRA method, projection magnetic resonance digital subtraction angiograph (MRDSA), generates time-resolved angiograms in a manner similar to conventional digital x-ray digital subtraction angiography. (iospress.com)
- HlthRes-DB also contains indicators on the availability of the following medical equipment: computed tomography (CT) scanners, magnetic resonance imaging (MRI) units, positron emission tomography (PET) scanners, gamma cameras, digital subtraction angiography units, mammographs, radiation therapy equipment and lithotriptors. (who.int)
- Types include magnetic resonance angiography, interventional radiology, and computed tomography. (tabers.com)
Fluoroscopy4
- Digital subtraction angiography (DSA) is a fluoroscopy technique used in interventional radiology to clearly visualize blood vessels in a bony or dense soft tissue environment. (wikipedia.org)
- However, a recent study has suggested limitations to DSA because of associated fatal complications despite the absence of intravascular injection in digital subtraction fluoroscopy ( 4 ). (anesthpain.com)
- Main mechanical parts: tube stand, examination table, grid for removing scattered photons (Bucky), X-ray detector: cassette with radiographic film and adjacent fluorescent screens (in radiography) or image intensifier (both on the way out) or flat panel digital detector (in fluoroscopy). (scribd.com)
- The focus extends from general radiography through fluoroscopy to 3D angiography as applied in general hospitals and clinics. (wikibooks.org)
Stenosis4
- Compared with conventional DSA, the sensitivity and specificity of 16-detector row CT angiography with regard to detection of hemodynamically significant stenosis in all 35 arterial segments were 96% and 97%, respectively, for both readers. (uzh.ch)
- Digital subtraction angiography showing severe long segment stenosis of right-side iliofemoral arteries. (thefreedictionary.com)
- Digital Subtraction Angiography (DSA) is the standard method for detection of carotid artery stenosis. (ac.ir)
- Preoperative evaluation of carotid artery stenosis: comparison of contrast-enhanced MR angiography and duplex sonography with digital subtraction angiography. (unil.ch)
Assessment4
- Digital subtraction angiography with intravenous injection: assessment of 1,000 carotid bifurcations. (semanticscholar.org)
- PURPOSE: To prospectively compare the accuracy of 16-detector row computed tomographic (CT) angiography with conventional digital subtraction angiography (DSA) as the reference standard in the assessment of aortoiliac and lower extremity arteries in patients with peripheral arterial disease. (uzh.ch)
- CONCLUSION: Sixteen-detector row CT angiography is an accurate and reliable noninvasive alternative to conventional DSA in the assessment of aortoiliac and lower extremity arteries in patients with peripheral arterial disease. (uzh.ch)
- Postoperative assessment of clipped aneurysms with 64-slice computerized tomography angiography. (semanticscholar.org)
Radiography3
- Digital Radiography heralds a new era for medical X-ray imaging. (wikibooks.org)
- A printable version of Basic Physics of Digital Radiography is available. (wikibooks.org)
- Microangiography (/ˌmaɪkroʊˌændʒiˈɒɡrəfi/ MY-kro-AN-jee-OG-rə-fee) is a type of angiography that consists of the radiography of small blood or lymphatic vessels of an organ. (wikipedia.org)
Intravenous digital subtraction4
- Intravenous digital subtraction angiography (IV-DSA) is a form of angiography which was first developed in the late 1970s. (wikipedia.org)
- Intravenous digital subtraction angiography (DSA) of the extracranial and intracranial carotid and vertebral artery circulations. (bvsalud.org)
- I've just come falling back from my dr and ardor he has prescribed Optiray 160 for direct intravenous digital subtraction coronary angiography. (azithromycinonline.com)
- It is possible that another angiographic approach, intravenous digital subtraction angiography (IVDSA), could enhance the speed of this screening process. (readabstracts.com)
Pulmonary angiography1
- It is used as the preferred alternative to invasive pulmonary angiography (which is accurate but requires right ventricular catheterization), or to ventilation/perfusion scanning of the lungs (which often yields indeterminate results). (tabers.com)
Vessels13
- In traditional angiography, images are acquired by exposing an area of interest with time-controlled x-rays while injecting contrast medium into the blood vessels. (wikipedia.org)
- Visibility of the blood vessels is enhanced by the subtraction of digital TV images taken at different times--one image is taken when the blood is opacified with contrast media (called the contrast or dye image) and the second image is taken when the blood is not opacified (called the mask image). (google.com)
- Fifty consecutive adult patients, who successively underwent MSCT angiography (four rows) and IADS angiography of intracranial vessels, were prospectively identified. (nih.gov)
- A method and system for extracting coronary vessels fluoroscopic image sequences using coronary digital subtraction angiography (DSA) are disclosed. (google.com)
- digital subtraction angiography radiographic visualization of blood vessels, with images produced by subtracting background structures and enhancing the contrast of those areas that change in density between a preliminary "mask" image and subsequent images. (thefreedictionary.com)
- Digital subtraction angiography is an x-ray based imaging technique for studying the blood vessels. (trinitymedcenter.com)
- Digital subtraction angiography is an examination that provides images of the lumen (inner surface) of the blood vessels including the arteries, veins and the heart chambers. (gleneagles.com.sg)
- Digital subtraction angiography (DSA) is a radiological technique that can be used to clearly visualize the blood vessels from surrounding bones or dense soft tissues. (scienceopen.com)
- The CAAS platform offers software packages for quantitative X-ray angiography image analysis with a complete range of tools allowing the performing of accurate and reproducible measurements of the dimensions of coronary arteries, peripheral blood vessels as well as left and right ventricles. (esaote.com)
- ISMRM 2013) High Resolution, Non-Contrast-Enhanced MR-Angiography of Pedal Vessels. (ismrm.org)
- One cause of the high death rate is the length of time required for conventional biplane angiography, a method of viewing the blood vessels under X-ray, to evaluate the thoracic aorta. (readabstracts.com)
- While most other types of angiography cannot produce images of vessels smaller than 200 µm in diameter, microangiography does just that. (wikipedia.org)
- Laser Doppler imaging by holography provides high-contrast visualization of local blood flow in choroidal vessels in humans, with a spatial resolution comparable to state-of-the-art indocyanine green angiography. (wikipedia.org)
IVDSA1
- This was evaluated by studying 50 patients who underwent IVDSA and conventional biplane angiography. (readabstracts.com)
Duplex1
- With the progress of imaging techniques, noninvasive or minimally invasive methods like the CT angiography, MR angiography and ultrasonography with Doppler or Duplex mode were applicable. (ac.ir)
Coronary arteries4
- Digital subtraction angiography (DSA) again works by introducing a contrast agent into the coronary arteries and taking x-rays in real time, however a pre image is taken by x-ray. (essaysamurai.co.uk)
- Angiography of the heart and coronary arteries. (tabers.com)
- Angiography for the determination of visible blockages in the coronary arteries with noninvasive CT scanning instead of coronary catheterization. (tabers.com)
- Angiography of the coronary arteries to determine any pathological obstructions to blood flow to the heart muscle. (tabers.com)
Intracranial aneurysms3
- The goal of this study was to assess the diagnostic accuracy of computerized tomography (CT) angiography performed with the aid of multislice technology (MSCT angiography) in the investigation of intracranial aneurysms, by comparing this method with intraarterial digital subtraction (IADS) angiography. (nih.gov)
- Multislice CT angiography is an accurate and robust noninvasive screening test for intracranial aneurysms. (nih.gov)
- Intracranial aneurysms: evaluation by MR angiography. (semanticscholar.org)
SPIE1
- A. Viergever, Fast rubber sheet masking for digital subtraction angiography , SPIE 1137 Science and Engineering of Medical Imaging (1989) 22. (springer.com)
Cardiac5
- Improvement of cervicocranial i.v. digital subtraction angiography with pixel remasking and cardiac gating. (semanticscholar.org)
- In our study, only images from corresponding moments in the cardiac cycle before and after contrast injection were matched for subtraction, that is, the concept of apparent cardiac arrest. (uu.nl)
- A combination of the application of the concept of apparent cardiac arrest with the subtraction technique in 12 patients resulted in good quality images. (uu.nl)
- This review looked at the techniques of cardiac computed tomography scanning and cardiac digital subtraction angiography, and their contribution to the investigation of coronary artery disease. (essaysamurai.co.uk)
- The research shows mixed evidence for cardiac computed tomography angiography as a test of high specificity, however sensitivity and specificity of cardiac digital subtraction angiography is high, and therefore suggest that the techniques may be useful in low risk patients. (essaysamurai.co.uk)
Diagnostic3
- Conclusion: Carboangiographic study combined to digital subtraction angiography can clear some diagnostic problems and is further method to assess the outcome of angiographic interventional procedures in oncology. (elsevier.com)
- With the advances in technology, there are now various diagnostic tests available to assess coronary artery disease, including coronary angiography and computed tomography (CT) scanning (Gorenoi, Schonermark & Hagen, 2012). (essaysamurai.co.uk)
- Coronary angiography is the conventional diagnostic procedure used in coronary artery disease. (essaysamurai.co.uk)
Noninvasive2
- After the introduction and rapid progress of cross-sectional imaging methods, such as CT angiography, MR angiography, and Doppler sonography in the late 80s and early 90s, many radiologists believed that these noninvasive methods would soon completely replace intra-arterial angiography. (ajnr.org)
- While digital subtraction angiography (DSA) is still viewed as the gold standard in carotid imaging, noninvasive imaging methods, including resonance angiography (MRA), computed tomography angiography (CTA), and ultrasonography, play an increasing role in the evaluation of carotid artery disease. (thefreedictionary.com)
Tomographic3
- Computed tomographic angiography versus digital subtraction angiograph" by Nikhil Gautam Thaker, Jay D. Turner et al. (lvhn.org)
- Computed tomographic angiography versus digital subtraction angiography for the postoperative detection of residual aneurysms: a single-institution series and meta-analysis. (lvhn.org)
- Computed tomographic scans and digital subtraction angiograms in these 97 patients were retrospectively reviewed in consensus by two interventional radiologists. (snu.ac.kr)
Injection4
- Digital subtraction angiography (DSA) with intravenous contrast injection was performed on 500 consecutive adult patients and evaluated for image quality of the carotid artery bifurcations. (semanticscholar.org)
- subtraction of images made before and after contrast injection removes structures not enhanced by the contrast medium . (thefreedictionary.com)
- images made before and after contrast injection allow subtraction (separation and removal) of opacities not enhanced by the contrast medium Other image-processing can be performed. (thefreedictionary.com)
- Several studies have reported that the use of digital subtraction angiography (DSA) increases the detection rate of the intravascular injection frequencies ( 1 - 3 ). (anesthpain.com)
Technique4
- Subtraction angiography was first described in 1935 and in English sources in 1962 as a manual technique. (wikipedia.org)
- Although it is a century-old technique, surprisingly the potential of serial conventional angiography appears still not fully explored. (ajnr.org)
- Digital subtraction angiography of the extremities using step-translation technique]. (docphin.com)
- Biederer J, Link J, Stolley C, Heller M. [Digital subtraction angiography of the extremities using step-translation technique]. (docphin.com)
Versus digital1
- To assess the sensitivity and specificity of CTA versus digital subtraction angiography (DSA) in detecting arterial injury and secondarily evaluate the ability of CT to assess non-arterial injury. (scielo.org.za)
Rotational angiography1
- It will be appreciated, however, that the invention will also find application in other rotational angiography systems, and the like. (google.com)
19851
- Ikeda H, Shibao K, Ohkita Y, Sugi K, Koga Y, Utsu F, Toshima H (1985) A quantitative evaluation of left ventricular function by digital subtraction angiography without using contrast medium: Time-activity curve and Fourier analysis (in Japanese). (springer.com)
Detection1
- Purpose: To compare the efficiency of gadolinium-enhanced 3D MR imaging and digital subtraction angiography (DSA) for detection and characterization of HCCs. (ismrm.org)
Radiation3
- Effective radiation dose was lower for 16-detector row CT angiography (1.6-3.9 mSv) than for conventional DSA (6.4-16.0 mSv). (uzh.ch)
- We advocate use of the mechanical injector by radiologists who perform regular angiography to reduce their exposure to radiation. (openrepository.com)
- Background: The main aim of this study was to find out what is the risk caused by ionizing radiation during digital subtraction angiography (DSA) for abdominal aorta and lower limb examinations. (edu.pl)
Venous1
- In those patients with Behçet's disease who have unexplained headaches, papilledema, and elevated cerebrospinal fluid pressure, venous digital subtraction angiography is an expedient, accurate, and safe procedure for demonstrating intracranial venous thrombosis. (elsevier.com)
Patients who underwent1
- Medical records for 15 patients who underwent rotational three-dimensional (3D) digital subtraction angiography (3D-DSA) before the clipping surgery were analyzed after the surgery. (scientificscholar.in)
Interventional1
- The angiography also provides a visual guide for interventional procedures needed to re-open blocked arteries such as angioplasty, arterial stent, nephrostomy, and biliary procedures. (gleneagles.com.sg)
Sensitivity1
- however, 2 mm stood as the cutoff size below which the sensitivity of MSCT angiography was statistically lower. (nih.gov)
Clinical applications1
- Digital subtraction angiography: current clinical applications. (ahajournals.org)
20162
- Twenty-five patients who had undergone digital subtraction angiography (DSA) and VWMRI studies from September 2016 to September 2017 were included, resulting in 22 patients with 25 IAs, 9 with and 16 without AWE. (thejns.org)
- Irfan A, Weir G (2016) Hepatic Arterial Mapping by CT Angiography, Cone Beam CT and Digital Subtraction Angiography. (medcraveonline.com)
Hepatocellular carcinoma1
- When planning the treatment of patients with Hepatocellular carcinoma that require surgery or endovascular therapy, it is useful to consider the variety of anatomical variants that are possible and it is the objective of this article to classify them using digital subtraction angiography and CT. (minervamedica.it)
Advantages2
- Comparisons between digital subtraction angiography and conventional angiography have frequently been made in the radiologic literature, and the high quality and several advantages of the former have been reported. (ajnr.org)
- Park S K, Choi Y S. Advantages of Digital Subtraction Angiography During Nerve Block, Anesth Pain Med. (anesthpain.com)
Selective1
- This study was undertaken to evaluate the possible use of digital subtraction applied after selective coronary arteriography. (uu.nl)
Subarachnoid hemorrhage1
- Negative CT angiography findings in patients with spontaneous subarachnoid hemorrhage: When is digital subtraction angiography still needed? (elsevier.com)