四川省放射治疗机输出剂量的国际比对研究  

An International Comparison of Output Dose of Radiotherapy Machines in Sichuan Province

作　　者：钟海洛[1] 吴大可[1] 祁国海[1] 康盛伟[1] 万斌[1] 罗素明[2] 何志坚[2] 郎锦义[1] 

机构地区：[1]四川省肿瘤医院放疗中心,成都610041 [2]中国疾病预防控制中心辐射防护与安全医学所,北京100000

出　　处：《肿瘤预防与治疗》2012年第2期57-62,66,共7页Journal of Cancer Control And Treatment

基　　金：四川省科技厅支撑项目课题(2008SZ0189)

摘　　要：目的:通过IAEA/WHO中国片区(中国四川)2009年度放射治疗机输出剂量(TLD)国际比对与四川省本地放射治疗机质量控制核查比对研究,评价四川省放疗单位放射治疗机输出剂量的比对合格情况。方法:IAEA/WHO国际比对和四川省本地比对分别采用IAEA/WHO邮寄LiF(Mg,Ti)及自制LiF(Mg,Cu,P)TLD剂量计,在10cm或5cm水深处、10cm×10cm照射野,SSD和SAD照射,对四川省20个地、市、县30(34)家医疗单位的放射治疗机的输出剂量进行比对。结果:IAEA/WHO国际比对11台^(60)Co放射治疗机合格10台,合格率为90.9%;19台加速器合格18台,合格率为94.7%。四川省本地放射治疗机质量控制核查13台^(60)Co放射治疗机合格11台,合格率为84.6%;21台加速器合格18台,合格率为85.7%。结论:四川省放疗单位放射治疗机输出剂量比对合格率低于发达国家水平,高于全国调查平均水平。Objective： To study the international comparison verification of radiotherapy machine output dose and local com- parison research of radiotherapy machine output dose in IAEA/WHO China district （ Sichuan province） in 2009. Methods： LiF （ Mg, Ti ） mailed way recommended by IAEA/WHO and self-made LiF TLD dosimeter（ Mg, Cu, P） were adopted to compare the output doseof radiation therapy machine. Data were collected from 30 medical units in Sichuan province under the situation of 5cm or 10cm depths of water, 10cm × 10cm field size, same SSD and SAD irradiation. Results： 11 ^60Co radiotherapy machines and 19 accelerators were involved in the IAEA/WHO international comparison, among which 10 and 18 units passed respectively with the pass rate of 90. 9% , 94. 7% ; In Sichuan province comparison, 13 ^60Co radiotherapy machines and 21 accelerators were involved, among them 11 and 18 units passed respectively, with the pass rates of 84. 6% and 85.7%. Conclusion： The pass rates of radiotherapy machine output dose in Siehuan radiotherapy units are lower than that in the developed countries, but higher than the average level of national survey.

关 键 词：剂量比对 TLD剂量计 合格率 

分 类 号：TH774[机械工程—仪器科学与技术]