GE Revolution能谱成像定量参数在肺栓塞诊断中的应用

Application of Quantitative Parameters of GE Revolution Energy Dispersive Imaging in The Diagnosis of Pulmonary Embolism

目的分析GE Revolution能谱成像定量参数对肺栓塞(pulmonary embolism,PE)的诊断效能。方法回顾性选取2020年1月-2022年1月在本院接受GE Revolution CT扫描检查的42例PE患者临床资料为观察组,另选取同期接受GE lightspeed 64排螺旋CT检查的50例PE患者为对照组。对比两组患者扫描图像质量、检查时间、肺动脉CT值、有效辐射剂量和背景噪声(BN),计算对比度噪声比(CNR)、信号噪声比(SNR),评估GE Revolution定量参数对PE的诊断价值。结果观察组图像质量包括1级40例(95.24%),2级1例(2.38%),3级1例(2.38%);对照组包括1级40例(80.00%),2级8例(16.00%),3级2例(4.00%);两组图像质量分级比较,差异具有统计学意义(P<0.05)。两组患者的噪声指标BN、SNR、CNR以及肺动脉干、左肺动脉、右肺动脉、胸大肌CT值比较,组间差异无统计学意义(P>0.05)。观察组检查时间短于对照组(3.35±1.30 vs 7.62±1.12,s),有效辐射剂量低于对照组(0.84±0.09 v s 1.95±0.74,mSv)(P<0.05)。结论GE Revolution CT和GE lightspeed 64排螺旋CT均可获取PE较高质量图像,从而有助于临床快速诊断PE,但GE Revolution CT可与提高图像质量等级,并减少扫描检查时间,降低有效辐射剂量。

Objective To analyze the diagnostic efficacy of quantitative parameters of GE Revolution energy dispersive imaging in pulmonary embolism(PE).Methods The clinical data of 42 PE patients who received GE Revolution CT scanning in our hospital from January 2020 to January 2022 were retrospectively selected as the observation group,and 50 PE patients who received GE Lightspeed 64 slice spiral CT scanning at the same time were selected as the control group.The scanning image quality,examination time,pulmonary artery CT value,effective radiation dose,and background noise(BN)of the two groups were compared,and the signal to contrast to noise ratio(CNR)and noise ratio(SNR)were calculated to evaluate the diagnostic value of GE Revolution quantitative parameters for PE.Results The image quality of the observation group included 40 cases(95.24%)of grade 1,1 case(2.38%)of grade 2 and 1 case(2.38%)of grade 3.The control group included 40 cases(80.00%)of grade 1,8 cases(16.00%)of grade 2 and 2 cases(4.00%)of grade 3.These has a statistically significant difference(P<0.05).The inspection time of observation group was shorter than that of control group(3.35±1.30 vs 7.62±1.12,s),and the effective radiation dose was lower than that of control group(0.84±0.09 vs 1.95±0.74,mSv)(P<0.05).Conclusion PWV,ABI,FAR are closely related to the prognosis quality of cardiovascular disease,and the combined detection of indicators has a high predictive value for poor prognosis of cardiovascular disease.