16层螺旋CT血管造影对主动脉夹层的诊断与评价

ANGIOGRAPHY WITH 16-SLICE SPIRAL CT IN THE DIAGNOSIS AND EVALUATION OF AORTIC DISSECTION

目的探讨16层螺旋CT血管造影对主动脉夹层的诊断价值。方法回顾性分析32例主动脉夹层病例的CT横轴位及后处理图像表现,后处理技术包括MPR、MIP、CPR、VR、CTVE等。结果在主动脉夹层的诊断上,以轴位增强图像最重要,是所有后处理的基础图像,显示的图像信息最可靠,MPR、MIP、VR、CTVE为主要后处理成像方法 ,在原始轴位增强图像的基础上综合运用各种重建方法可以清晰显示主动脉夹层的类型、病变范围、真假腔、破口、内膜片等解剖细节及其与主要分支血管的空间解剖关系。结论 16层螺旋CT血管造影是诊断与评价主动脉夹层较有效的无创性检查方法之一,对于临床治疗方案的选择具有重要的应用价值。

Objective To explore the diagnostic value of angiography with 16-slice spiral CT in aorta dissection.Methods The findings of CT angiography of 32 cases of aortic dissection were analyzed retrospectively.Post-processing techniques included multi-planar reconstruction,maximum intensity projection,curved planar reconstruction,volume reconstruction and virtual endoscopy.Results In the diagnosis of aortic dissection,axial images was the most important,which was the basis of all image post-processing and had the most reliable image information displayed.MPR,MIP,VR,CTVE were the main image processing methods.The original axial along with other enhanced images based on the comprehensive use of various reconstruction methods could clearly display the type of aortic dissection,disease extent,true and false lumen,break,and other anatomical details of the intimal flap and the relationship between the anatomical details and the main branch vessels.Conclusion Angiography with 16-slice spiral CT in the diagnosis and evaluation of aortic dissection is a more effective non-invasive screening method with some essential value for the clinical therapies.