螺旋CT血管成像技术在肺动脉栓塞诊断中的应用

目的探讨螺旋CT肺动脉血管成像(sp iral CT pu lmonary angiography,SCTPA)技术对肺动脉栓塞(pu lmonary embolism,PE)的诊断价值。方法收集SCTPA检查并证实为PE的患者25例,采用单/多排螺旋CT扫描机行肺动脉增强检查并行多平面重建(MPR)、最大强度投影(M IP)和表面遮盖显示(SSD)重建。结果本组25例PE共行29次SCTPA检查,中央型PE 23例(92%),周围型PE 2例(8%)。主肺动脉、左及右肺动脉、叶间肺动脉、叶肺动脉、舌支肺动脉的显示率均达100%,对段肺动脉的显示率达97.77%,对亚段肺动脉的显示率也达68.00%。PE受累血管主要集中在叶、段肺动脉,受累率在46.58%~75.00%之间。结论SCTPA技术为临床及早发现并明确诊断PE的可靠检查手段之一。

The Application of Spiral CT Angiography in Evaluation of Pulmonary Embolism

Objective To study the diagnostic value of spiral CT pulmonary angiography(SCTPA) for pulmonary embolism(PE).Methods SCTPA scans were performed in 25 patients with PE,the contrast-enhanced SCT scans of the pulmonary arteries were performed,MPR,MIP and SSD were performed simultaneously.Results The 29 SCTPA scans were performed in 25 patients, including the central type in 23 cases(92%) and the peripheral type in 2 cases(8%).The rates of the main,the sinistral and dextral,the middle lobular,the lobular and the lingular pulmonary artery displayed were 100%,the rates of the segmental pulmonary artery displayed were 97.77% and the rates of the subsegmental pulmonary artery displayed were 68.00%.The lobular and segmental pulmonary artery were mainly embolized,the rates of PE were between 46.58% and 75.00%.Conclusion SCTPA has great value in earlier and clear and definite diagnosis of PE.