多层螺旋CT肺动脉成像在肺动脉栓塞诊断中的应用价值

The Value of Multi-slice Spiral CT in Diagnosis of Pulmonary Embolism

目的探讨肺动脉栓塞(PE)在多层螺旋CT(MSCT)肺动脉成像中的影像特征,评价对肺动脉栓塞的诊断价值。方法 32例PE病人均MSCT增强扫描,并进行多平面重建(MPR),最大密度投影(MIP)、容积再现(VR)及仿直内窥镜(VE)后处理。结果 32例受检者肺动脉主干至段动肺的显示率为100%,对亚段及5级肺动脉的显示率为78.6%。可见到不同部位、不同类型和形态的充盈缺损,并有不同种类的间接征象。结论多层螺旋CT肺动脉成像是诊断肺动脉栓塞的一种快速、有效、安全的诊断方法。

Objective To evaluate the multi-slice Spiral Computed tomography（MSCT） in the diagnosis of Pulmonary embolism,and to compare the characters of the images. Methods 32 Cases with suspected Pulmonary embolism were checked by Contrast enhancement on multi-slice Spiral Computed tomography and their images were rebuilt in the ways of MPR,MIP,VR and VE displaying systems. Results Every Pulmonary artery varying from trunk to segmental branch artery was displayed clearly with the displaying accuracy-rate being 100%,Furthmore,the accuracy-rate of displaying sub-segmental artery or Grade 5 branch of Pulmonary artery was verified to 78.6%,Mean while many filling defects of different types and different shapes were observed in different parts of Pulmonary arteries with different indirect characteristics in 32 patients. And having serial type of indirect Characteristic. Conclusion Multi-slice Spiral Computed tomography with Vascular imaging is fast effective,non-invasive,which can be Practically used in the diagnosis of pulmonary embolism.