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Application of MR diffusion-weighted imaging in the diagnosis of hyperacute cerebral infarction
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- Author:
- No author available
- Journal Title:
- CHINESE JOURNAL OF RADIOLOGY
- Issue:
- 3
- DOI:
- 10.3760/j.issn:1005-1201.2002.03.006
- Key Word:
- 脑缺血;磁共振成像;回波平面成像;评价研究
Abstract： 目的评价磁共振扩散加权成像(DWI)对超急性期脑梗死诊断的准确性.方法对卒中样起病且发病时间在6 h以内、临床高度怀疑脑梗死的21例患者进行DWI和常规MRI扫描.结果DWI诊断脑梗死16例,其最终临床诊断均为急性脑梗死,DWI阴性5例,其最终临床诊断为短暂性脑缺血发作;DWI所见高信号区域的同一部位在以后的CT和(或)MRI随访中均有脑梗死病灶;DWI诊断超急性期脑梗死的敏感度和特异度均为100%,常规MRI诊断超急性期脑梗死的敏感度为25%,特异度为100%.结论 DWI对超急性期脑梗死的诊断高度准确,其敏感度明显高于常规MRI.
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