PE患者应用双源双能CT诊断的临床价值分析

目的研究双源双能CT在周围型肺阻塞(PE)中的诊断价值。方法将我院2015.01~2018.01间收治94的疑似PE患者纳为研究对象,其均行flash双源CT双能量肺动脉成像,扫描图像在后处理工作站中进行LungPBV及LungVessels处理,观察CTPA、CTPA+LungPBV、CTPA+LungVessels对全部栓子的检出效果,并计算LungPBV、LungVessels与CTPA在周围型PE诊断中的一致性。结果分析94例研究对象CTPA、LunPBV、LungVessels图像,并结合其临床症状共确诊32例患者为周围型PE,检出率为34.04%,分析32例周围型PE患者1920支血管,发现172支栓塞肺动脉,其中55支为段动脉、89支为亚段动脉,28支为亚段以下动脉;单纯CTPA共检出152支(88.37%)栓塞肺动脉,CTPA+LungPBV共检出162支(94.19%),CTPA+LungVessels共检出167支(97.09%);LungPBV检查与CTPA在诊断PE中的一致性为84.74%;LungVessels检查与CTPA在诊断PE中的一致性为80.23%。结论LungPBV能有效显示肺组织血流灌注情况,LungVessels可通过碘含量有效显示肺动脉栓子,LungPBV与Lung Vessels软件结合CTPA均能有效提高周围型肺栓塞检出率。

Clinical Value of Dual-source Dual-energy CT in the Diagnosis of Patients with PE

Objective To study the diagnostic value of dual-source dual-energy CT inperipheral pulmonary embolism(PE). Methods The patients suspected as PEadmitted to our hospital from January 2015 to January 2018 were enrolled in the study. All patients were treated with flash dual-source CT dual-energy pulmonary artery imaging. The scanned images were processed in Lung PBV and Lung Vessels in the post-processing workstation. And the detection effects of CTPA, CTPA+Lung PBV and CTPA+Lung Vessels on all emboli were observed, and the consistency of Lung PBV, Lung Vessels and CTPA was calculated in the diagnosis of peripheral PE. Results 32 patients were detected as peripheral PE with the detection rate of 34.04% by the means of analyzing CTPA, Lun PBV and Lung Vessels images of 94 patients and combining their clinical symptoms. Among 1920 blood vessels of 32 patients with peripheral PE, there were 172 embolized pulmonary arteries, including 55 segmental arteries, 89 subsegmental arteries and 28 below-subsegmental arteries. 152(88.37%) embolized pulmonary arteries were detected by CTPA alone, and 162(94.19%) arteries were detected by CTPA+Lung PBV, and 167(97.09%) detected by CTPA+Lung Vessels. The consistency of Lung PBV and CTPA in the diagnosis of PE was 84.74%. The consistency of Lung Vessels and CTPA in the diagnosis of PE was 80.23%. Conclusion Lung PBV can effectively show the perfusion of lung tissue. Lung Vessels can effectively display pulmonary emboli through iodine content. Lung PBV and Lung Vessels software combined with CTPA can effectively improve the detection rate of peripheral pulmonary embolism.