نتایج جستجو برای: vessel occlusion
تعداد نتایج: 134297 فیلتر نتایج به سال:
Fusiform aneurysms on the basilar artery (BA) trunk are rare. The microsurgical management of these aneurysms is difficult because of their deep location, dense collection of vital cranial nerves, and perforating arteries to the brain stem. Endovascular treatment is relatively easier and safer compared with microsurgical treatment. Selective occlusion of the aneurysmal sac with preservation of ...
We present a rare and unusual avulsed vessel in a patient with branch retinal vein occlusion (BRVO). Fundus examination of the right eye showed BRVO and a long avulsed vessel. Fluorescein angiography clearly defined an avulsed vessel communicated directly with an inferotemporal branch retinal vein at the optic disc. The coexistence of BRVO and avulsed vessel is extremely rare, to our knowledge ...
BACKGROUND AND PURPOSE Hyperintense vessels (HVs) have been observed in fluid-attenuated inversion recovery imaging of patients with acute ischemic stroke and been linked to slow flow in collateral arterial circulation. Given the potential importance of HV, we used a large, multicenter data set of patients with stroke to clarify which clinical and imaging factors play a role in HV. METHODS We...
Cerebral ischemia is widely studied through the employment of experimental animal models. Incomplete global models such as two-vessel occlusion are relevant in the study of disease states which may attenuate cerebral ischemia. Hyperglycemia is known to worsen the consequences of ischemia but has not been exclusively employed. The two-vessel occlusion model, which is unsuccessful when employed i...
BACKGROUND AND PURPOSE The aim of the present study was to investigate independent clinical and MRI factors associated with no early recanalization within 1 hour after tissue-type plasminogen activator (tPA) administration. METHODS Patients with acute stroke within 3 hours of onset who were treated with tPA were studied prospectively. Patients with internal carotid artery, M1, and M2 occlusio...
BACKGROUND AND PURPOSE Vessel anatomy is assumed to influence results of endovascular mechanical thrombectomy using stent retrievers. The purpose of this study was to analyze the influence of vessel curvature on recanalization results in patients with acute ischemic stroke caused by large-vessel occlusion. MATERIALS AND METHODS In 159 patients (70 ± 12.8 years of age; 79 women) treated for ac...
We discuss two complementary methods for the study of cerebral blood flow and brain function in response to the occlusion of individual, targeted blood vessels. These bear on the study of microstroke and vascular dysfunction in cortex. One method makes use of linear optical absorption by a photosensitizer, transiently circulated in the blood stream, to induce an occlusion in a surface or near-s...
Abstract Background SWI can help in the diagnosis of thrombus within vessel acute ischemic stroke (AIS) known as susceptibility sign (SVS) and detection SVS predict treatment modality outcome. In this study, purpose is to correlate on with different parameters stroke. Method It was a retrospective cross-sectional where consecutive patients occlusion magnetic resonance angiography (MRA) were inc...
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