نتایج جستجو برای: cerebrovascular angiography
تعداد نتایج: 135499 فیلتر نتایج به سال:
3.0-T magnetic resonance (MR) angiography and MR imaging were compared with conventional angiography for the evaluation of moyamoya disease in 13 preoperative patients (26 hemispheres) with moyamoya disease (4 males and 9 females aged 21-54 years). The correlation between MR angiography scores determined by modified Houkin's grading system (MRA score) and conventional angiography stages determi...
AIM To determine the significance of the association between biochemical risk factors for cerebrovascular atherosclerosis (lipid parameters, lipoprotein(a), total homocysteine, total antioxidant status, trace elements, and electrolytes) and the degree of stenosis of cerebral arteries scored by digital subtraction angiography. METHODS The study included 35 patients with angiographically establ...
There are anecdotal reports of early cerebrovascular complications occurring in patients with glucocorticoid-remediable aldosteronism (GRA). The issue has never been systematically evaluated. In this study, we retrospectively reviewed the International Registry for GRA to see if there was an association between cerebrovascular complications and GRA. We searched the records of 376 patients from ...
The natural history of cerebrovascular disease (CBVD) was evaluated in 169 non-treated patients followed for at least 12 years after aortocervical angiography. The outcome was related to type and location of atherosclerotic changes in the neck vessels. At the time of angiography, 108 patients had completed strokes, 20 had transient ischemic attacks (TIAs), and 41 had angiography for reasons oth...
Background: Cerebrovascular disease is characterized by an acute compromise of the cerebral perfusion or vascular which caused morbidity and mortality around world. The most accurate imaging technique for evaluation cerebrovascular system digital subtraction angiography (DSA), but it can cause many complications, one groin complication. Our objective was to determine incidence predictors compli...
Free-floating thrombus (FFT) of the internal carotid artery, which is almost always symptomatic and is usually discovered by ultrasound or angiography performed after a transient cerebrovascular event, is a highly uncommon diagnosis. Here, we report a case of an asymptomatic freefloating internal carotid artery thrombus most probably caused by an atherosclerotic plaque rupture. It was detected ...
Doppler optical coherence tomography (DOCT) and OCT angiography are novel methods to investigate cerebrovascular physiology. In the rodent cortex, DOCT flow displays features characteristic of cerebral blood flow, including conservation along nonbranching vascular segments and at branch points. Moreover, DOCT flow values correlate with hydrogen clearance flow values when both are measured simul...
Isolated intracranial fibromuscular dysplasia is rare and may present with cerebrovascular events. It should be considered as etiology of stroke in otherwise healthy young patients. Though diagnosis is often challenging, characteristic morphologies may be revealed on magnetic resonance and catheter angiography. Cephalocervical fibromuscular dysplasia typically involves the extracranial portion ...
Vessel wall magnetic resonance imaging at ultra-high field (7 Tesla) can be used to visualize vascular lesions noninvasively and holds potential for improving stroke-risk assessment in patients with ischemic cerebrovascular disease. We present the first multi-modal comparison of such high-field vessel wall imaging with more conventional (i) 3 Tesla hemodynamic magnetic resonance imaging and (ii...
SUMMARY We applied regional perfusion imaging (RPI), a new arterial spin-labeling MR imaging method that selectively studies regions of the brain perfused by individual carotid and basilar arteries. In a patient with cerebrovascular disease, RPI showed cerebral tissue perfused by pial collateral vessels, thereby demonstrating the relationship between anatomic and functional information, which w...
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