目的探讨双源CT双能量肺动脉 血管成像技术早期诊断肺动脉栓塞患者的 实效性评价，为临床提供参考。方法 选 择我院2013年1月至2014年3月收治的40 例可疑肺栓塞疾病患者，所有患者均以 双源CT机进行肺部双能量扫描，扫描数 据以双能量的评估软件分析，肺部分成 上、中、下，进行能量成像分析。采用 MPR、MIP、VR、CTVE技术对原始数据进 行重建。结果 40例患者中，18例患者确 诊为肺动脉栓塞，4例患者为肺炎，3例患 者为肺癌，15例患者正常。18例肺动脉栓 塞患者中，栓子共有218支，其中中心型 栓子90支，偏心型46支，附壁型42支， 完全闭塞型40支。15例正常患者中，对 其肺组织灌注进行分析，双肺及双肺的 上部、中部、下部对比分析后，差异无 统计学意义(t=1.149、1.021、1.027、 1.135，P>0.05)。对正常组与肺栓塞组肺 组织灌注进行分析，双肺及双肺的上部、 中部、下部对比分析后，差异无统计学 意义(t=6.394、6.092、6.607、6.862， P<0.05)。结论 双源CT双能量肺动脉成像 对于肺动脉栓塞患者的诊断具有很重要的 意义，能够在早期阶段及时发现肺栓塞病 情，值得临床推广。

Objective To investigate the effectiveness of dual-source dual-energy CT pulmonary angiography of the early diagnosis of patients with pulmonary embolism. Methods 40 patients with suspicious pulmonary disease were chosen in our hospital to receive treatment. All patients are dual-source dual-energy CT scan lung machine, with dual-energy scan data evaluation software were analyzed and the lungs into upper, middle and lower, the energy imaging were analyzed. MPR, MIP, VR, CTVE technology to reconstruct the original data were used. Results In 40 patients, 18 patients were diagnosed with pulmonary embolism, pneumonia in 4 patients, 3 patients with lung cancer, 15 patients with normal. 18 cases of patients with pulmonary embolism, a total of 218 emboli, which of central emboli 90, eccentric 46, mural-type 42, type 40 totally were occluded. 15 normal patients, their lung tissue perfusion were analyzed, the upper lungs and lungs, middle and lower comparative analysis, the difference was not statistically significant (t = 1.149,1.021,1.027,1.135, P> 0.05). The normal lung tissue perfusion and pulmonary embolism were analyzed, the upper lungs and lungs, middle and lower comparative analysis, the difference was not statistically significant (t = 6.394,6.092,6.607,6.862, P <0.05). Conclusion Dual-source dual-energy CT pulmonary angiography for the diagnosis of pulmonary embolism in patients has a very important sense and the ability to detect the disease at an early stage of pulmonary embolism, so it is worthy of promotion.