64层螺旋CT三维血管成像在主动脉夹层诊断中的价值  

Value of 3D 64-slice CT angiography in the diagnosis of aortic dissection

作　　者：袁红梅[1] 余建群[1] 张优仪[1] 原珍团[1] 褚志刚[1] 

机构地区：[1]四川大学华西医院,四川成都610041

出　　处：《山东医药》2008年第26期36-38,共3页Shandong Medical Journal

摘　　要：目的探讨64层螺旋CT三维血管成像在主动脉夹层诊断中的价值。方法对34例主动脉夹层(AD)患者行64层螺旋CT薄层扫描,在工作站采用最大密度投影(MIP)、多平面重建(MPR)及容积再现(VRT)技术对轴位图像进行三维重建。结果34例AD中显示真假腔34例,内膜片27例,壁内血肿7例;27例典型夹层三维成像均显示明确破口,主动脉弓部破口以矢状位显示最佳,降主动脉破口以轴位及冠状显示最佳,VRT显示病变全程较清晰,但对破口及内膜片的显示不如MIP、MPR及轴位。结论64层螺旋CT三维血管成像能全面清晰显示AD解剖病理改变,尤其是对破口的显示,是AD的重要诊断手段。Objective To investigatc the value of three-dimensional imaging features of 64-slice CT angiography in the diagnosis of aortic dissection. Methods Thin 64-slice CT scanning was applied to 34 cases with aortic dissection, and three-dimensional reconstructions were performed on thin axial images in the workstation, using maximum intensity projection （ MIP）, multi-planar projection （MPR） and volume rendering technology（VRT）. Results 34.true and false lumen , 7 intramural hematoma, 27 cases of typical aortic dissection with intimal flaps and clear break were found through the threedimensional imaging in different positions, respectively. The best image of aortic and descending aorta were obtained at sagittal reformations, and the axial, coronal reformations respectively. VRT was found the better method to show the whole of lesion, but less than other reformations in showing the break and intimal flap. Conclusion 3D 64-slice CT angiography can reveal the pathological and anatomical features of aortic dissection, and provide accurate imaging information for clinical therapy.

关 键 词：主动脉夹层 螺旋CT 64层 三维成像 

分 类 号：R816.4[医药卫生—放射医学]