PE患者应用GE宝石能谱CT诊断的临床价值分析

目的探讨肺栓塞(PE)患者应用GE宝石能谱CT诊断的临床价值。方法收集2017年8月~2018年12月我院临床疑似PE并行能谱CT检查的患者120例,以CT肺动脉造影(CTPA)确诊的PE患者为研究对象,通过数据处理获取CTPA图像及肺组织碘基物质图像。根据CTPA图像观察栓子分布情况并进行类型,于碘基图中测定栓塞区与与对侧正常区相比碘含量值。结果 120例临床可疑PE患者,经能谱CTPA证实为阳性57例,共发现289个栓子,其中完全型栓子172个,不完全型117个(包括中心型17个、偏心型86个、附壁型14个)。完全型栓子、中心型及偏心型栓子栓塞区碘基值均明显低于对照区(P<0.05);附壁型栓子碘基值在栓塞区与对照组之间无统计学差异(P>0.05)。完全型栓子灌注减低区检出率明显高于不完全型栓子(P<0.05)。结论宝石能谱CT能够显示肺组织血流灌注异常改变,对PE诊断及病情评估有重要价值。

Clinical Value of GE Gem Energy Spectrum CT for The Diagnosis of PE Patients

Objective To investigate the clinical value of GE gem energy spectrum CT for the diagnosis of pulmonary embolism(PE) patients. Methods A total of 120 patients clinically suspected with PE who underwent energy spectrum CT in the hospital from August 2017 to December 2018 were enrolled. PE patients confirmed by CT pulmonary angiography(CTPA) were included in the study. CTPA images and iodine-based image of lung tissues were obtained through data processing. The distribution of the embolus was observed according to CTPA images. The typing was conducted. The iodine content values in embolism areas and contralateral normal areas from iodine-based image were compared. Results Of the 120 patients clinically suspected with PE, there were 57 positive cases confirmed by energy spectrum CTPA. A total of 289 emboli were found, including 172 complete emboli and 117 incomplete emboli(including 17 central type and 86 eccentric type and 14 attachment type). The iodine-based values in embolism areas of the complete, central and eccentric emboli were significantly lower than those in the control area(P<0.05). There was no statistical difference in iodine-based values of attachment type emboli between the embolism area and the control grouP(P>0.05). The detection rate in infusion reduction area of the complete emboli was significantly higher than that of the incomplete emboli(P<0.05). Conclusion Gem energy spectrum CT can show abnormal changes of blood perfusion in lung tissues, which is of great value for PE diagnosis and disease assessment. Clinical value of GE gem energy spectrum CT for the diagnosis of PE patients.