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• W2163982462 abstract "Abstract Background Intracranial atherosclerosis is a leading cause of stroke, but little is known about the composition of the intracranial atherosclerotic lesion and how intracranial plaque morphology is related to the risk of stroke. High‐resolution magnetic resonance imaging ( HR MRI ) has been used in patients with extracranial carotid atherosclerosis as an in vivo tool to identify, with high‐interrater agreement, histologically defined plaque components (i.e., intraplaque hemorrhage, fibrous cap, and lipid core), which have been shown to be predictors of recurrent stroke. With careful imaging the components of atherosclerotic plaque can be visualized in the intracranial arteries using HR MRI , but there are no reports of reproducibility or interrater reliability. Methods/Study design The Characterization of intracranial atherosclerotic stenosis using high‐resolution MRI ( CHIASM ) study is a single‐center NIH ‐funded prospective observational study, to (1) demonstrate high ‐interrater agreement for identifying intracranial plaque components on HR MRI , (2) determine the frequency of these components in symptomatic versus asymptomatic plaques, and (3) estimate the 1‐year rate of stroke in the territory of high‐risk plaque components. CHIASM will recruit 90 patients with 50–99% intracranial atherosclerosis to undergo HRMRI of the intracranial artery plaque at enrollment and 1‐year follow‐up. Both symptomatic and asymptomatic subjects will be recruited. Conclusion Determination of good interrater reliability is an important first step in the development of HR MRI as a tool to predict risk in patients with intracranial atherosclerosis. This study will inform the design of future multicenter studies to determine the prevalence and prognosis of intracranial atherosclerotic plaque components. Such studies could lead to new understanding of the pathophysiological mechanisms of cerebral ischemia in patients with atherosclerotic intracranial stenosis, improvements in risk stratification, and potentially to new treatments of this common and serious disease." @default.
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• W2163982462 date "2015-09-25" @default.
• W2163982462 modified "2023-10-17" @default.
• W2163982462 title "Characterization of intracranial atherosclerotic stenosis using high‐resolution <scp>MRI</scp> study – rationale and design" @default.
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• W2163982462 doi "https://doi.org/10.1002/brb3.397" @default.
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