期刊
ATHEROSCLEROSIS
卷 212, 期 2, 页码 507-511出版社
ELSEVIER IRELAND LTD
DOI: 10.1016/j.atherosclerosis.2010.06.035
关键词
Middle cerebral artery; Plaque; Magnetic resonance imaging; Cerebral ischemia; Atherosclerosis
资金
- 11th-five years project of China
- Chinese Medical Association
Objective: Recently, the technique of high-resolution magnetic resonance imaging (HR-MRI) has been developed to depict intracranial artery wall. We aimed to compare the vessel wall properties between symptomatic and asymptomatic atherosclerotic middle cerebral arteries (MCA) using HR-MRI. Methods: We studied 26 patients with symptomatic and 35 patients with asymptomatic MCA stenosis. Routine cranial MRI, magnetic resonance angiography and HR-MRI were performed on each patient. The cross-sectional images of MCA wall on HR-MRI were compared between the two groups. Results: The degree of MCA stenosis was similar between the two groups (67.9% vs 63.9%, P = 0.327). On HR-MRI, eccentric plaques were observed in 26 (100%) symptomatic and 28 (80%) asymptomatic stenosis. In the remaining seven (20%) asymptomatic stenosis, only constrictive remodeling (vessel shrinkage) was observed. Compared with the asymptomatic group, symptomatic MCA stenosis had a larger wall area (P < 0.001), greater remodeling ratio (P < 0.001), higher prevalence of expansive remodeling (outward expansion of the vessel wall) (P = 0.003) and lower prevalence of constrictive remodeling (P = 0.008). Conclusions: Different vessel wall properties on HR-MRI were observed between symptomatic and asymptomatic MCA stenosis. Further prospective studies are required to investigate whether HR-MRI is a helpful tool in stratifying stroke risk in patients with MCA atherosclerotic disease. (C) 2010 Elsevier Ireland Ltd. All rights reserved.
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