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Vasospasm after subarachnoid hemorrhage: diagnosis with MR angiography and CT angiography
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- Author:
- No author available
- Journal Title:
- CHINESE JOURNAL OF PRIMARY MEDICINE AND PHARMACY
- Issue:
- 8
- DOI:
- 10.3760/cma.j.issn.1008-6706.2007.08.005
- Key Word:
- 蛛网膜下腔出血;脑血管痉挛;磁共振血管造影;CT血管造影;诊断
Abstract： 目的 评价磁共振血管造影(MRA)与螺旋CT血管造影(CTA)对脑血管痉挛(CV)的诊断价值.方法 急性蛛网膜下腔出血(SAH)患者10例,出血停止后5～10 d行MRA检查,CTA在MRA后24 h内进行.每例CV检查5个脑动脉位置:颈内动脉鞍上段(ICA),大脑中动脉(MCA)M1、M2段及大脑前动脉(ACA)A1、A2段.CV根据管腔直径分为:无痉挛、轻度痉挛(管腔缩小＜30%)、中度痉挛(管腔缩小30%～50%)、重度痉挛(管腔缩小＞50%).结果 MRA与CTA对全部5个位置CV程度检出的一致性达到82%,相关因子为0.76,对近端血管相关性好过远端血管.MRA对无痉挛(89%)及重度痉挛(100%)的检出与CTA的相关程度高(r=0.85～0.91),对轻度痉挛(56%)及中度痉挛(67%)相关程度稍差(r=0.21～0.51).结论 MRA对近端血管无痉挛或者严重痉挛的检出率高,对远端轻度及中度痉挛患者的检出稍差.
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