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目的 评价CT肺动脉三维成像诊断肺栓塞的临床敏感度及特异度.方法 选取郑州大学第二附属医院2015年1月-2016年12月收治的59例肺栓塞患者,均行CT肺动脉成像检查,统计检查结果及栓子类型、数量.结果 CT肺动脉成像诊断准确率为96.61％ (57/59),敏感度为96.49％(55/57),特异度为100.00％(2/2),漏诊率为3.51％(2/57),误诊率为0.00％(0/2),阳性预测值为100％(55/55),阴性预测值为50.00％(2/4);CT肺动脉成像显示肺动脉主干、左右肺动脉及叶、段、亚段肺动脉739支,肺动脉栓塞193支,栓塞率为26.12％(193/739),其中亚段肺动脉栓塞最为常见约占29.92％,其次为叶肺动脉栓塞、段肺动脉、左/右肺动脉和肺动脉干.结论 CT肺动脉成像诊断肺栓塞的敏感度、特异度及准确率均较高,误诊漏诊率低.“,”Objective To investigate the the effect of CT pulmonary angiography on clinical diagnostic sensitivity and specificity in pulmonary embolism patients.Methods Totally 59 patients with pulmonary embolism in our hospital from January 2015 to December 2016 were subjected to CT pulmonary angiography examination.Examination results and embolic type,quantity were statistically analyzed.Results For CT pulmonary angiography,the diagnostic accuracy was 96.61％ (57/59),the sensitivity was 96.49％ (55/57),the specificity was 100.00％ (2/2),the missed diagnosis rate was 3.51％ (2/57),the misdiagnosis rate was 0.00％ (0/2),the positive predictive value was 100％ (55/55)and the negative predictive value was 50.00％ (2/4);CT pulmonary angiography examination results showed that left and right pulmonary arteries,pulmonary arteries,leaves,segments,and subsegmental pulmonary artery 2217 branches,pulmonary embolism 581 branches,the pulmonary artery embolization rate was 26.21％ (581/2217),of which subsegmental pulmonary embolism was the most common and accounting for about 29.92％,followed by leaves pulmonary artery embolization (29.48％),segmental pulmonary artery (26.84％),left/right pulmonary artery (12.18％) and pulmonary artery stem (7.69％).Conclusion Diagnosis of pulmonary embolism using CT pulmonary angiography has high diagnostic value,sensitivity and specificity,besides,its diagnostic accuracy is high,and the misdiagnosis and missed diagnosis rate is low.