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BACKGROUND AND PURPOSEFractional flow may identify hemodynamic effects and ischemic risk beyond percent stenosis of an artery. We hypothesized that diminished TOF‐MRA signal intensity distal to an intracranial stenosis predicts stroke risk.
METHODSTOF‐MRA was acquired prospectively in the SONIA‐WASID trials. The distal/proximal signal intensity ratio (SIR) was calculated from 3 mm regions of interest,...
Background In symptomatic intracranial atherosclerotic stenosis (ICAS), its hemodynamic impact may affect the risk of stroke recurrence, in addition to the degree of luminal stenosis. We therefore conducted a pilot study to evaluate the feasibility to delineate the hemodynamic impact of symptomatic ICAS lesions using computational fluid dynamics (CFD) models reconstructed based on computed tomography...
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