多层螺旋CT在无回腔性沟通的不典型主动脉夹层诊断和随访中的应用

Application of multi-slice spiral CT in diagnosis and follow-up of atypical aortic dissection of no back cavity communications

目的探讨多层螺旋CT(MSCT)在无回腔性沟通的不典型主动脉夹层诊断和随访中的应用价值。方法回顾性分析11例无回腔性沟通的不典型主动脉夹层的CT重组图像,并与手术结果进行对照。结果 11例患者中A型夹层4例,B型夹层7例。容积再现技术(VR)、多平面重建(MPR)及曲面重组(CPR)图像清楚显示了主动脉内膜破口、溃疡的位置。在病例的随访中,对于溃疡大小的变化,继发动脉瘤形成及壁间血肿范围的变化能作出准确的诊断。结论 MSCT能够显示无回腔性沟通的不典型主动脉夹层的大小、位置、范围及并发症,可以为诊断和随访提供有价值的影像学信息。

Objective To explore the value of multi-slice spiral CT （MSCT） in diagnosis and follow-up of of atypical aortic dissection of no back cavity communications. Methods MSCT angiography post-processing images in 11 patients with atypical aortic dissection of no back cavity communications were retrospectively analyzed and compared with the operation results. Results Eleven cases were classified into tow group according to stanford methods. A： 4 cases; B： 7 cases. The location of the intimal tear and ulcer were clearly assessed on votume rendering （VR）, multi-planar reformation （MPR） and curved planar reformation （CPR） images, The change of ulcer size, secondary aneurysm formation and the change of range of intramural hematoma were accurately diagnosed by MSCT. Conclusion The size, location, range and complication of atypical aortic dissection of no back cavity communications can be assessed by MSCT. It can provide valuable information for the diagnosis and follow-up in chnical practice.