64层螺旋CT不同剂量扫描对活动性继发性肺结核患者诊断价值、图像质量和辐射剂量的影响

目的:研究64层螺旋CT不同剂量扫描对活动性继发性肺结核患者诊断价值、图像质量和辐射剂量的影响,旨在为临床活动性继发性肺结核患者提供更为安全有效的检查方案。方法:将我院从2018年1月2020年1月收治的100例活动性继发性肺结核患者纳入研究。对所有患者分别进行低剂量(40 m A)以及常规剂量(120 m A)扫描和薄层重建。比较不同剂量扫描的诊断准确率、影像学表现、图像质量以及辐射参数、患者满意度。结果:64层螺旋CT低剂量扫描与常规剂量扫描诊断活动性继发性肺结核的准确率分别为92.00%、93.00%,两者比较差异无统计学意义(P>0.05)。低剂量扫描及常规剂量扫描在空洞、钙化灶、实变、磨玻璃密度影及树芽征发生率方面对比差异均无统计学意义(P>0.05)。低剂量扫描及常规剂量扫描在扫描图像质量、薄层重建图像质量方面对比差异均无统计学意义(P>0.05)。低剂量扫描各项扫描辐射参数均低于常规剂量扫描,差异有统计学意义(P<0.05)。低剂量扫描的患者满意度高于常规剂量扫描的患者(P<0.05)。结论:64层螺旋CT不同剂量扫描对活动性继发性肺结核患者的诊断价值及生成的图像质量相近,但低剂量扫描可有效降低辐射剂量,从而在一定程度上增加扫描的安全性,使患者满意度提升。

Effect of Different Dose of 64-slice Spiral CT Scanning on Diagnostic Value, Image Quality and Radiation Dose of Active Secondary Pulmonary Tuberculosis

Objective:To study the effect of different dose of 64-slice spiral CT scanning on the diagnostic value,image quality and radiation dose of active secondary pulmonary tuberculosis patients,in order to provide a more safe and effective examination scheme for clinical active secondary pulmonary tuberculosis patients.Methods:100 active secondary pulmonary tuberculosis patients who were admitted to our hospital from January 2018 to January 2020 were included in the study.All subjects underwent low dose(40 m A)and conventional dose(120 m A)scanning and thin layer reconstruction.The diagnostic accuracy,imaging findings,image quality and radiation parameters of different dose scans and patient satisfaction were compared.Results:The accuracy of 64-slice spiral CT low-dose scan and conventional dose scan in the diagnosis of active secondary tuberculosis were 92.00%and 93.00%,respectively,with no significant difference(P>0.05).There were no significant differences in the incidence of cavities,calcification foci,consolidation,ground glass density shadows and tree buds between low dose and conventional dose scanning(P>0.05).There were no statistically significant differences between low-dose and conventional dose scanning in scanning image quality and thin-layer reconstruction image quality(P>0.05).All scanning radiation parameters of low-dose scan were lower than those of conventional dose scan,with significant difference(P<0.05).The satisfaction of patients in the low-dose scan group was higher than that in the conventional dose scan group(P<0.05).Conclusion:The diagnostic value and image quality of the patients with active secondary pulmonary tuberculosis were similar in 64-slice spiral CT scanning with different doses,but the radiation dose could be effectively reduced by low-dose scanning,thus increasing the scanning safety to a certain extent,and improve the patient satisfaction.