肺部CT检查低剂量与常规剂量的对照研究

【摘要】 目的:探讨低剂量螺旋CT扫描技术在胸部体检中的诊断与防护价值。方法:对高度怀疑胸部病变者178例行常规及低剂量胸部多层螺旋CT扫描,观察比较其对病变的定量及定性诊断的差异和辐射剂量的差异。结果:与常规剂量多层螺旋CT扫描相比,多层螺旋CT低剂量扫描对病变的定性与定量诊断无明显差异,但是辐射剂量有大幅度下降。结论:21mAs可得到满意的影像质量,有利于患者胸部的辐射防护,成本低效益高,应开展低剂量CT筛查肺癌。更多还原

【Abstract】 Objective:To evaluate Low- dose MSCT scanning in detection chest disease and its significance in radioprotection. Methods:Conventional and Low- dose MSCT scanning were performed in 178 cases of adult with suspected chest disease. The accuracy in the lesion detection and characteristic diagnosis were compared and dose difference was analyzed. Results:There were no significant difference between two ways of MSCT scans in lesion detection and characteristic diagnosis. The radiation dose was greatly decreased in minor dose staged MSCT scanning. Conclusion:Low-dose MSCT (21mAs) showed satisfactory imaging quality in our study and it plays an important role in radioprotection. Low-dose CT screening for lung cancer may applied if situation permits.更多还原