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Diagnosis of Vertebral Artery Ostial Stenosis on Contrast-Enhanced MR Angiography: Usefulness of a Thin-Slab MIP Technique  

Kim, Sun-Mi (Department of Radiology, Kyung Hee University Hospital-Gangdong, School of Medicine, Kyung Hee University)
Lee, Deok-Hee (Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center)
Choi, Jin-Woo (Department of Radiology, Konkuk University Hospital, Konkuk University School of Medicine)
Choi, Byung-Se (Department of Radiology, Seoul National University Bundang Hospital)
In, Hyun-Sin (Department of Radiology, Busan Paik Hospital, Inje University College of Medicine)
Publication Information
Investigative Magnetic Resonance Imaging / v.15, no.1, 2011 , pp. 77-81 More about this Journal
Abstract
It is a well-known clinical fact that contrast-enhanced magnetic resonance angiography exaggerates vertebral arterial ostial stenosis and sometimes shows pseudostenosis. Considering the clinical significance of a lesion in the posterior circulation ischemia, the importance of an accurate imaging diagnosis of ostial stenosis should not be underestimated. We were able to differentiate pseudo stenosis of the ostium from true stenosis using thin-slab maximum-intensity-projection(MIP) images which are thought to be helpful for minimizing standard full thickness MIP images.
Keywords
Vertebral artery ostial stenosis; Contrast-enhanced MRA; Thin-slab MIP technique;
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