ＭＲ Ａｎｇｉｏｇｒａｐｈｙによる脳底動脈狭窄または閉塞の臨床的検討
書誌事項
- タイトル別名
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- Clinical features of basilar artery stenosis or occlusion as revealed by MR angiography.
抄録
In 72 consecutive patients diagnosed as having basilar artery stenosis or occlusion by threedimensional time-of-flight magnetic resonance angiography (3D-TOF MRA), we assessed the risk factors, cerebrovascular attacks, symtoms, infarct location and collateral circulation. Three groups were compared: they displayed occlusion (A group, n=7); stenosis≥50% in diameter with an irregular arterial wall (B group, n=50); and stenosis≥50% with a smooth arterial wall (C group, n=15). The mean age of the patients was 69.9 y, and that in the A group was less (59.1 y) than that in the two other groups. Cumulative cerebrovascular attacks were more commonly observed in the A group (66.7%) than in the B group (48.8%) and the C group (18.2%) (p<0.1). TIA was most common in the A group (66.7%, p<0.05). Concerning the symptoms at the times of attack, diplopia was the most common symptom in the A group (100%, p<0.0005). Infarcts in the dorsal pons on MRI were more frequently seen in the A group (28.6%) than in the B group (6.0%) and the C group (0%) (p<0.05). A bilateral fetal configuration of the circle of Willis on MRA was most common in the C group (93.3%), followed by the A group (42.9%) and B group (8.2%) (p<0.001). Our findings suggest that both the A and B groups have an atherosclerotic basilar artery, while the C group has an originally hypoplastic basilar artery. The clinical features of the three groups are evidently different from each other.
収録刊行物
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- 脳卒中
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脳卒中 20 (5), 462-468, 1998
一般社団法人 日本脳卒中学会
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詳細情報 詳細情報について
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- CRID
- 1390001204640089984
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- NII論文ID
- 130003631357
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- ISSN
- 18831923
- 09120726
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可