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KMID : 0858520110150010077
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Journal of the Korean Society of Magnetic Resonance in Medicine
2011 Volume.15 No. 1 p.77 ~ p.81
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Diagnosis of Vertebral Artery Ostial Stenosis on Contrast-Enhanced MR Angiography: Usefulness of a Thin-Slab MIP Technique
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Kim Sun-Mi
Lee Deok-Hee
Choi Jin-Woo
Choi Byung-Se
In Hyun-Sin
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Abstract
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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.
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KEYWORD
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Vertebral artery ostial stenosis, Contrast-enhanced MRA, Thin-slab MIP technique
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