1973
DOI: 10.1148/109.2.327
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Cerebral Arteritis: Classification

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Cited by 109 publications
(37 citation statements)
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“…13 Recently, hyperintense vessels have been described on FLAIR images in hyperacute stroke patients with an arterial occlusion 8,9,14 and are considered to be an indicator of slow flow and inadequate collateral circulation. The results of this case-control study suggest that (1) the assessment of HVS on FLAIR is reproducible, (2) multiple HVS on FLAIR is significantly more frequent in patients with multiple intracerebral stenoses (68%) than in asymptomatic patients without intracerebral stenoses (5.2%) regardless of the presence of a brain infarct, and (3) HVSs on FLAIR underestimate the extent of intracerebral stenoses as demonstrated by angiogram.…”
Section: Discussionmentioning
confidence: 69%
“…13 Recently, hyperintense vessels have been described on FLAIR images in hyperacute stroke patients with an arterial occlusion 8,9,14 and are considered to be an indicator of slow flow and inadequate collateral circulation. The results of this case-control study suggest that (1) the assessment of HVS on FLAIR is reproducible, (2) multiple HVS on FLAIR is significantly more frequent in patients with multiple intracerebral stenoses (68%) than in asymptomatic patients without intracerebral stenoses (5.2%) regardless of the presence of a brain infarct, and (3) HVSs on FLAIR underestimate the extent of intracerebral stenoses as demonstrated by angiogram.…”
Section: Discussionmentioning
confidence: 69%
“…The 2 primary features of vasculopathy were tabulated separately: 1) diffuse vessel constriction or narrowing, 2) focal vessel irregularity of first-, second-, and third-order branch vessels (focal vasoconstriction, focal vasodilation, and beaded or string-ofbead appearance). 21,22 Diffuse vasoconstriction (narrowing or constriction) was considered present if significant diffuse vessel caliber reduction was observed in 2 or more major branch groups (ACA, MCA, and PCA). We judged focal vessel irregularity using the traditional features of vasospasm and arteritis and graded on a 4-point scale (0, normal; 1, possibly abnormal [mild vessel irregularity]; 2, moderate vessel irregularity; and 3, severe vessel irregularity).…”
Section: Distal Branch Visualization (Pruning)mentioning
confidence: 99%
“…However, the process may begin as vasculitis which then evolves to thrombosis of the vessels or aneurysm formation. 6,10,15) Histological studies demonstrate non-specific vasculitis with mononuclear cells or neutrophilic infiltration, endothelial cell proliferation, destruction of the elastic lamina, fibrinoid necrosis, and thrombus formation. 15,19,29) Vasculitis of the vasa vasorum is generally believed to be responsible for aneurysm or pseudo-aneurysm formation.…”
Section: Discussionmentioning
confidence: 99%