双源CT双能量软件诊断肺栓塞的临床应用研究  

Diagnostic value of dual energy software in the detection of periperal pulmonary embolism in dual energy CT pulmonary angiography

作　　者：黄乐平[1] 富青[2] 

机构地区：[1]广州市红十字会医院,510000 [2]华中科技大学同济医学院附属协和医院

出　　处：《实用医技杂志》2016年第9期929-931,共3页Journal of Practical Medical Techniques

摘　　要：目的探讨双源CT双能量软件诊断肺动脉栓塞的临床应用价值。方法回顾性收集临床怀疑肺栓塞并行CT双能量肺动脉造影(DE-CTPA)的患者50例,测量主肺动脉干、右下肺静脉CT值,并以DE-CTPA为标准分别计算双能肺血流灌注软件(Lung PBV)以及Lung PBV联合肺血管分析软件(Lung Vessels)对于肺栓塞的诊断准确性。结果利用双源CT能量软件Lung PBV诊断肺栓塞的敏感性、特异性、阳性预测值(PPV)、阴性预测值(NPV)、诊断准确性依分别为59%、90%、90%、61%、72%,Lung PBV结合Lung Vessels诊断肺栓塞的敏感性、特异性、PPV、NPV、诊断准确性分别为86%、90%、93%、83%、88%。以栓子个数为单位,Lung PBV诊断肺栓塞的敏感性88%,Lung PBV结合Lung Vessels诊断肺栓塞的敏感性94%。结论双源CT肺动脉成像双能量软件(Lung PBV及Lung Vessels)可以进一步提高外周肺栓塞的检出率。Objective In order to evaluate dual energy software（Lung PBV and Lung Vessels）in the detection of periperal pulmonary embolism（PE） in dual energy CT pulmonary angiography. Methods Fifty patients suspected of PE underwent dual energy CT pulmonary angiography（DE-CTPA）. The densities of main pulmonary trunk and right lower pulmonary vein were measured. The diagnostic ability of Lung PBV as well as Lung PBV combined with Lung Vessels for detection of periperal PE by regarding DE-CTPA as standard was calculated respecetively. Results Sensitivity,specificity,positive predictive value（PPV） and negative predictive value（NPV） of Lung PBV was 59%,90%,90%,61%,72%;Lung PBV combined with Lung Vessels was 86%,90%,93%,83%,88% respectively in diagnosis of periperal PE. For embolism-by-embolism analysis,the sensitivity of Lung PBV was 88%,Lung PBV combined with Lung Vessels was 94% respectively. Conclusion The application of dual energy software（Lung PBV and Lung Vessels） could help to improve the detection of peripheral pulmonary embolism which occurred in segmental and subsegmental levels.

关 键 词：体层摄影术 螺旋计算机 肺栓塞 诊断 

分 类 号：R563.5[医药卫生—呼吸系统] R816.41[医药卫生—内科学]