目的 探讨肺动脉CTA联合间接法盆腔下肢静脉CTV在肺动脉栓塞诊断中的作用。方法 56例疑为肺动脉栓塞的患者 行肺动脉CTA及间接法盆腔下肢静脉CTV，数据传至工作站进行重建及观察，方法包括多平面重建(MPR)、曲面重建 (CPR)、最大密度投影(MIP)及容积再现(VR)。结果 无阳性发现7例，仅发现肺动脉栓塞3例，仅发现下肢静脉栓塞 11例，肺动脉栓塞合并下肢静脉栓塞35例(62.5%)。结论 肺动脉CTA联合间接法盆腔下肢静脉CTV能很好地显示肺动 脉栓塞和/或下肢静脉栓塞，在肺动脉栓塞的诊断中具有重要的临床应用价值，值得在基层医院大力推广。

Objective To explore the value of pulmonary artery CTA combined with CT vengraphy in the diagnosis of pulmonary embolism. Methods Fifty-six suspected pulmonary embolism patients were performed both pulmonary angiography and CT vengraphy. The data were sent to workstation for reconstruction and observation. Postprocessing include multiplanar reconstruction (MPR), curved surface reconstruction (CPR), maximum density projection (MIP)and volume rendering(VR). Results Thirty five patients had pulmonary embolism(PE) and deep venous thrombosis(DVT), 3 had PE, 11 had DVT, and 7 had neither. Conclusion Combined pulmonary angiography and CT vengraphy can well display pulmonary embolism(PE) and/or deep venous thrombosis(DVT), it plays an important role in the diagnosis of pulmonary embolism, suitable for popularization in basic level hospidal.