digital subtraction angiography images
2D perfusion angiography in patients with critial limb ischemia: a study into reproducibility, variability and vessel extraction
... perfusion angiography (2DPA) is a post processing software tool that uses digital subtraction angiography images to calculate perfusion during revascularization ...perfusion ...
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Detection and Characterization of Intracranial Aneurysms with 16 Channel Multidetector Row CT Angiography: A Prospective Comparison of Volume Rendered Images and Digital Subtraction Angiography
... All DSA was performed transfemorally with 5F catheters by using a DSA unit (Integris Allura, Philips Medical Systems, Best, the Nether- lands) with an image intensifier matrix of 1024 ⫻ 1024 pixels. DSA was performed ...
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COMPARISON BETWEEN 3D TOF MAGNETIC RESONANCE ANGIOGRAPHY AND INTRAARTERIAL DIGITAL SUBTRACTION ANGIOGRAPHY IN IMAGING THE CIRCLE OF WILLIS
... The false negative findings for the A2, P1 and PCOM segments in our patients could be due to either problems of saturation effects of slow flowing blood or due to limits of resolution of this technique and its MIP ...
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Aneurysms of the Anterior Communicating Artery Treated with Guglielmi Detachable Coils: Follow Up with Contrast Enhanced MR Angiography
... a digital subtraction system (Integris V 3000; Philips Medical Systems, Best, the ...two images per second with a 512 ⫻ 512 matrix size and a 20-cm field of ...
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Multidetector Row CT Angiography of Cerebral Vasospasm after Aneurysmal Subarachnoid Hemorrhage: Comparison of Volume Rendered Images and Digital Subtraction Angiography
... The volumetric data so obtained were transferred to a workstation (RAPIDIA 3D; Infinitt, Seoul, Korea) for further processing. Trans- verse sections were reconstructed with a section width of 1.25 mm at an interval of ...
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Chinese specialist consensus on imaging diagnosis of intracranial arterial dissection
... Digital subtraction angiography is the conventional im- aging ...tional angiography (3D–RA) provides high spatial resolution of reconstructed 3D images so that the char- acteristics of ...
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Intracranial Vascular Stenosis and Occlusive Disease: Evaluation with CT Angiography, MR Angiography, and Digital Subtraction Angiography
... gray-scale images, by using appropriate window and level settings, rather than the 3D images, since the latter may not be able to discriminate between pixels belonging to bone and those belonging to ...
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4D Digital Subtraction Angiography: Implementation and Demonstration of Feasibility
... As shown in Fig 3, after the basic back-projection step when the projections are multiplied by a binary constraining image (up- per right), there are signal peaks caused by the alignment of the vessels with the ...
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MR Digital Subtraction Angiography of Cerebral Arteriovenous Malformations
... pened because the contrast material was not inject- ed in an adequate bolus. We assume that this could make the evaluation of hemodynamics with our technique difficult as compared with the use of con- ventional ...
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Intraoperative digital subtraction angiography: a review of 112 consecutive examinations
... intraoperative angiography on neurosurgery and angiographic technical success, safety, and ...erative angiography was performed during ...portable digital subtraction angiography unit ...
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MR Angiography of the Great Anterior Radiculomedullary Artery (Adamkiewicz Artery) Validated by Digital Subtraction Angiography
... Coronal digital subtraction angiography (DSA) projection (A) and multiplanar reformatted contrast-enhanced MR angiography (CE-MRA) of the early phase (B and C) and late phase (D) of a ...
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<p>Etiology and management of nasopharyngeal hemorrhage after radiotherapy for nasopharyngeal carcinoma</p>
... CT images showing nasopharynx–skull base damage involving the adjacent blood vessels, require close observation and easy accessibility to rescue ...and digital subtraction angiography ...
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Contrast Enhanced MR Angiography of the Carotid and Vertebrobasilar Circulations
... approximately 19 seconds per 3D slab. After obtaining the initial timing bolus, 20 mL of gadolinium diethylene triamine penta-acetic acid were then injected at 2 mL/s. Patients were asked to hyperventilate before ...
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Arachnoid granulations in the transverse and sigmoid sinuses: CT, MR, and MR angiographic appearance of a normal anatomic variation
... or digital subtraction angiography was not indicated; however, three patients volunteered to have MR imaging in addition to their original CT examina- ...MR images were obtained primarily on a ...
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CT angiography versus Digital Subtraction angiography for intracranial vascular pathology in a clinical setting
... DSA images by the senior neurointerventional radiologist (LEH) showed concurrence with the original CTA report in 2 out of the 3 patients (Patients 1-3) with lesion related discrepancies (when the aneurysm was ...
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Comparison of Three Dimensional Rotational Angiography with Digital Subtraction Angiography in the Assessment of Ruptured Cerebral Aneurysms
... in 26 of 42 a microsurgical procedure was recom- mended. In seven patients, the options for microsur- gical versus endovascular were rated as being equal, according to the observers’ opinions and the stan- dards for ...
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Spiral CT angiography and selective digital subtraction angiography of internal carotid artery stenosis
... CT angiography was performed on a Somatom Plus S Scanner (Siemens, Erlangen, ...Axial images were recon- structed every 1 ...reconstructed images, a region of interest was selected to eliminate bony ...
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A retrospective study of computed tomography angiography versus digital subtraction angiography in penetrating neck trauma at Groote Schuur Hospital, South Africa
... Digital subtraction angiography was performed using a single C-arm ceiling-suspended DSA system (Toshiba Infinix ...DSA images were retrospectively anonymised and ...Bone subtraction ...
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Multi Section CT Angiography for Detection of Cerebral Aneurysms
... CT angiography were retrospectively ...CT angiography and digital subtraction angiography or surgery were included in the ...CT angiography was performed usually within an hour ...
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Digital Subtraction Cerebral Angiography by Intraarterial Injection: Comparison with Conventional Angiography
... Early work has suggested , however, that digital subtraction imaging of intraarteri al co ntrast injections can provide images of suffi cient di agnosti c quality to obviate conventional[r] ...
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