CAJ | 학술논문

目的通过评价辐射防护最优化前后患者剂量和废弃影像的差异,探讨在应用数字X射线摄影(DR)系统进行日常摄影中实施最优化的必要性.方法 200名近标准体格患者纳入研究,制定DR摄影防护最优化程序,100例执行最优化前方案摄影,100例执行最优化方案摄影.测量最优化前后患者剂量-面积乘积(DAP)和体表入射剂量(ESD).同时统计最优化前后各2个月内的废弃影像,并按废弃原因分类.比较最优化前后患者辐射剂量和影像废弃率的差异.结果最优化后的ESD和DAP显著低于最优化前(z=9.31、16.22,P＜0.05),影像废弃率明显低于最优化前(x2=36.5,P＜0.05).结论使用最优化程序的DR摄影可以有效降低患者辐射剂量并减小影像废弃率.
목적 통과평개복사방호최우화전후환자제량화폐기영상적차이,탐토재응용수자X사선섭영(DR)계통진행일상섭영중실시최우화적필요성.방법 200명근표준체격환자납입연구,제정DR섭영방호최우화정서,100례집행최우화전방안섭영,100례집행최우화방안섭영.측량최우화전후환자제량-면적승적(DAP)화체표입사제량(ESD).동시통계최우화전후각2개월내적폐기영상,병안폐기원인분류.비교최우화전후환자복사제량화영상폐기솔적차이.결과 최우화후적ESD화DAP현저저우최우화전(z=9.31、16.22,P＜0.05),영상폐기솔명현저우최우화전(x2=36.5,P＜0.05).결론 사용최우화정서적DR섭영가이유효강저환자복사제량병감소영상폐기솔.
Objective To identify the necessity to carry out optimization procedure in routine digital radiography (DR) by evaluating changes of patient radiation dose and image waste ratio before and after optimization.Methods Two hundred patients with near-standard body build were enrolled in the study.Half of them undertook routine examination,and the others undertook the examination with bestlyoptimized protocol.The dose-area product (DAP) and entrance surface dose (ESD) were recorded.The image waste ratios in 2 groups were calculated and the reasons for image waste were analyzed.The radiation dose and image waste ratio before and after optimization were compared.Results The ESD,DAP and image waste ratio in bestly-optimized radiography were significantly lower than those in non-optimized radiography (z =9.31,16.22,P＜0.05; x2 =36.5,P ＜ 0.05).Conclusion Using the bestlyoptimized digital radiography,the patient radiation dose and image waste ratio are effectively reduced.