超声与1.5T MRI在主动脉夹层诊断中的应用比较

Comparison of Application of Ultrasound and 1.5T MRI in the Diagnosis of Aortic Dissection

目的探究经胸超声心动图(TTE)与1.5T场强核磁共振成像(MRI)对主动脉夹层的诊断效果。方法回顾性分析98例主动脉夹层患者临床资料,根据其采用的不同影像学方法分为TTE组(n=61)与MRI组(n=37),以数字血管减影造影(DSA)为“金标准”,比较两组真腔/假腔鉴别、分支受累情况及DeBakey分型诊断符合率差异。结果两组真腔/假腔鉴别诊断及冠状动脉、主动脉弓分支受累情况诊断符合率比较均无统计学意义(P>0.05),而TTE组腹主动脉分支受累情况诊断及DeBakey分型诊断符合率则明显低于MRI组(P<0.05)。结论TTE与1.5TMRI应用于主动脉夹层均可获得较全面的诊断信息,且后者因诊断准确性较强,能为临床诊治策略及预后评估提供可靠参考依据。

Objective To explore the diagnostic effects of transthoracic echocardiography(TTE)and 1.5T magnetic resonance imaging(MRI)on aortic dissection.Methods The clinical data of 98 patients with aortic dissection were retrospectively analyzed.According to different imaging methods,the patients were divided into TTE group(n=61)and MRI group(n=37).The digital subtraction angiography(DSA)was taken as Gold standard to compare the diagnostic accordance rates of true cavity/false cavity identification,branch involvement and DeBakey classification between the two groups.Results There was no significant difference between the two groups in the diagnostic accordance rates of true cavity/false cavity identification,and involvement of coronary and aortic arch branches(P>0.05),and the diagnostic accordance rates of abdominal aortic branch involvement and DeBakey classification in TTE group were significantly lower than those in MRI group(P<0.05).Conclusion TTE and 1.5T MRI can obtain more comprehensive diagnostic information for aortic dissection.The latter one has a strong diagnostic accuracy and can provide a reliable reference for clinical diagnosis and treatment strategy and prognosis evaluation.