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Radiology, Vol 194, 477-481, Copyright © 1995 by Radiological Society of North America

ARTICLES

Enhancement of the intracranial arterial wall at MR imaging: relationship to cerebral atherosclerosis

S Aoki, I Shirouzu, Y Sasaki, T Okubo, N Hayashi, T Machida, E Hoshi, K Suzuki, N Funada and T Araki
Department of Radiology, Faculty of Medicine, University of Tokyo, Japan.

PURPOSE: To investigate the relationship between intracranial arterial wall enhancement and atherosclerosis. MATERIALS AND METHODS: Intracranial vertebral arteries of 30 patients and carotid arteries of 62 patients were studied with spin-echo magnetic resonance imaging with contrast enhancement and spatial presaturation. Arterial wall enhancement was graded as follows: stage 1, no substantial enhancement; stage 2, faint or thin area of enhancement; stage 3, definite and thick area of enhancement. RESULTS: In vertebral arteries, stage 3 enhancement was seen in 11 patients (mean age, 73.7 years) and stage 1 in eight (mean age, 56.4 years). In carotid arteries, stage 3 enhancement was seen in 13 patients (mean age, 71.0 years) and stage 1 in 21 patients (mean age, 39.0 years). In both arteries, stage was well correlated with age (P < .05). CONCLUSION: Arterial wall enhancement is related to aging and is probably due to neovascularity in association with atherosclerotic plaques. This finding may permit assessment of intracranial atherosclerosis and other vascular diseases.




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