磁共振血管造影在主动脉夹层诊断中的价值

目的评价磁共振血管造影（magnetic resonance angiography,MRA）对主动脉夹层的诊断价值。方法回顾性分析73例主动脉夹层患者MR血管造影Express序列和RF-FAST序列的图像,将MRA检查结果与外科手术或介入治疗结果比较。结果 73例主动脉夹层中包括DeBakeyⅠ型24例、Ⅱ型6例、Ⅲ型43例。MRA对主动脉夹层分型、范围、真假腔显示的敏感性和特异性均为100%,诊断内膜破口的敏感性94.74%,特异性100%,诊断主动脉分支血管受累的敏感性91.49%,特异性92.31%。结论 MRA能准确、无创地诊断主动脉夹层,为临床选择合理的治疗方案提供重要依据。

Diagnostic value of MR angiography in aortic dissection

Objective：To evaluate the value of magnetic resonance angiography （MRA） in diagnosing aortic dissection.Materials and Methods：We retrospectively analyzed MRA findings of 73 aortic dissection （AD） patients.Express and RF-FAST were used in the MR examination.The results were compared with the findings of surgery or DSA.Results：Seventy-three AD patients including DeBakey type Ⅰ24 cases,DeBakey type Ⅱ 6 cases,DeBakey type Ⅲ 43 cases.Both the sensitivity and the specificity of the presence and the differentiation of aortic dissection were 100%.The sensitivity of the localization of intimal tears was 94.74%,but the specificity was 100%.The sensitivity of the involvement of arch branches was 91.49%,but the specificity was 92.31%.Conclusion：The aortic dissection can be diagnosed by MRA accurately and non-invasive.MRA can provide more useful information to clinical treatment.