Synergy医用加速器3年输出剂量测量及其稳定性回顾分析  

Output Dose Measurement and Stability Retrospective Analysis of Synergy Medical Accelerator in 3 Years

作　　者：罗斌 李贤富[1,2] 曹璐 郭飞 谢力[1,2] 许鹏 阳华东[1,2] LUO Bin;LI Xianfu;CAO Lu;GUO Fei;XIE Li;XU Peng;YANG Huadong(Department of Oncology,Affiliated Hospital of North Sichuan Medical College,Nanchong Sichuan 637000,China;Sichuan Key Laboratory of Medical Imaging,Nanchong Sichuan 637000,China)

机构地区：[1]川北医学院附属医院肿瘤科,四川南充637000 [2]医学影像四川省重点实验室,四川南充637000

出　　处：《中国医疗设备》2022年第5期60-63,共4页China Medical Devices

基　　金：四川卫生计生委项目(19PJ037);南充市市校合作科研专项(18SXHZ0398);南充市市校合作科研专项(19SXHZ0281);川北医学院附属医院科研项目(2020JC026)。

摘　　要：目的分析阐述Synergy加速器输出剂量测量的理论基础及具体方法,通过3年的吸收剂量测量结果对其稳定性和影响因素进行回顾分析。方法首先按照IAEA TRS-277的要求测量Synergy加速器每周的输出剂量,再利用统计学软件SPSS对141例周检的测量结果进行分析并找出其中的异常点。结果常用标称能量6 MV的周检结果单样本K-S检验P>0.05,即符合正态分布要求。异常点重新标定后的P值显著增加,标定前后无统计学差异(P>0.05),结果数据达到了相关国标及AAPM TG-142中稳定性和剂量偏差≤±3%的标准,与IAEA-277中剂量偏差<2%的要求较为贴近。结论我院配备的Synergy加速器输出剂量稳定,周检结果呈正态分布,能够满足临床治疗的基本要求。Objective To analyze the theoretical basis and specific methods of Synergy accelerator output dose measurement,and retrospectively analyze its stability and influencing factors through the 3-year absorbed dose measurement results.Methods Firstly,the weekly output dose of the Synergy accelerator was measured in accordance with the requirements of IAEA TRS-277,and statistical software SPSS was used to analyze the measurement results of 141 weekly tests and find out the abnormal points.Results The weekly test results of the commonly used nominal energy of 6 MV were P>0.05 by single sample K-S test,which was in line with the requirement of normal distribution.The P value of abnormal points increased significantly after recalibration,and there was no statistical difference before and after calibration(P>0.05).The results showed that the data met the relevant national standards and the standard of stability and dose deviation≤±3%in AAPM TG-142,which was close to the requirement of IAEA-277 dose deviation<2%.Conclusion The output dose of Synergy accelerator in our hospital was stable,and the weekly test results showed normal distribution,which could meet the basic requirements of clinical treatment.

关 键 词：医用加速器 输出剂量 测量与标定 稳定性 回顾分析 

分 类 号：R197.39[医药卫生—卫生事业管理]