双源CT肺动脉血管成像对肺动脉栓塞的应用价值

The Application Value of Dual-source CT Pulmonary Artery Angiography in Pulmonary Embolism

目的分析在肺动脉栓塞诊断中行双源CT肺动脉血管成像的价值。方法以2011年1月—2019年12月70例肺动脉栓塞疑似患者为对象,均接受双源CT肺动脉血管成像(DEPI)检查,分析DEPI的诊断价值。结果DEPI对于肺动脉栓塞的诊断准确度为95.71%(67/70),特异度为88.89%(8/9),敏感度为96.72%(59/61)。59例经DEPI检查的确诊患者共检出380个栓子,其中肺叶部分栓塞有76个,肺叶完全栓塞有32个,肺段部分栓塞有142个,肺段完全栓塞有70个,肺亚段部分栓塞有32个,肺亚段完全栓塞有28个,肺叶、肺段、肺亚段部分栓塞患者均主要表现为肺灌注降低(94.74%、81.69%、68.75%),肺叶、肺段、肺亚段完全栓塞患者均主要表现为肺灌注缺损(87.50%、85.71%、64.29%)。结论双源CT肺动脉血管成像对肺动脉栓塞有良好诊断价值,特异度、敏感度均较高,值得推广应用。

Objective To analyze the value of dual-source CT pulmonary artery angiography in the diagnosis of pulmonary embolism.Methods From January 2011 to December 2019,70 patients with suspected pulmonary embolism were taken as subjects.All of them underwent dual-source CT pulmonary angiography(DEPI)to analyze the diagnostic value of DEPI.Results The accuracy of DEPI for pulmonary embolism was 95.71%(67/70),the specificity was 88.89%(8/9),and the sensitivity was 96.72%(59/61).A total of 380 emboli were detected in 59 patients diagnosed with DEPI,of which 76 were partially embolized in the pulmonary lobe,32 were completely embolized in the pulmonary lobe,142 were partially embolized in the pulmonary segment,70 were completely embolized in the pulmonary segment,and subsegmented;32 cases of partial embolism and 28 cases of complete pulmonary subsegment embolism.Patients with partial embolism of pulmonary lobe,pulmonary segment,and pulmonary subsegment all mainly showed reduced lung perfusion(94.74%,81.69%,68.75%).Patients with subsegmental complete embolism mainly showed pulmonary perfusion defects(87.50%,85.71%,64.29%).Conclusion Dual-source CT pulmonary artery angiography has good diagnostic value for pulmonary embolism,with high specificity and sensitivity,and it is worthy of popularization and application.