多层螺旋CT与核磁共振血管成像、数字减影对主动脉夹层诊断的比较研究

Aortic dissection:a comparative study of diagnosis with multi-slice spiral CT, magnetic resonance angiography and DSA

目的 :比较多层螺旋CT(multi slicespiralCT ,MSCT)与核磁共振血管成像 (MRA)、数字减影 (DSA)对主动脉夹层 (aorticdissection ,AD)的诊断价值。方法 :对 17例AD患者行MSCT检查 ,并与MRA、DSA的检查结果进行比较。结果 :对 17例AD患者用MSCT、MRA、DSA都能作出诊断 (按DeBakey分型 ,Ⅰ型有 4例 ,Ⅱ型有 1例 ,Ⅲ型有 12例 ) ,但只有MSCT能明确显示夹层的范围和分支的受累情况 ,以及剥离内膜瓣、裂口及主动脉的周围情况。而MRA对裂口的检出率只有 2 1 74%,DSA可达 87 0 %。结论 :MSCT对AD的分型以及破裂口的定位诊断更具准确性 。

Objective:To compare the diagnostic value of multi slice spiral CT(MSCT),magnetic resonance angiography(MRA) and DSA in aortic dissection(AD).Methods:Seventeen patients with clinically suspected AD were examined with MSCT,MRA and DSA.Results:There were 4 patients with type Ⅰ AD,1 with type Ⅱ,and 12 with type Ⅲ according to DeBakey classification.Sensitivity in the detection of AD was 100% for all techniques.MSCT depicted clearly the dissection extent,the intimal flap,the tear,the branch involvement,and the aortic surroundings.The tear of AD was detected in 21.74% with MRA,and 87.0% with DSA.Conclusion:MSCT is the best test to determine the classification and the tear of AD.