摘要
目的通过参加国际原子能机构(IAEA)和世界卫生组织(WHO)组织的邮寄热释光剂量计(TLD)国际比对,检查医院加速器剂量输出的准确性。方法申请IAEA/WHO邮寄TLD剂量核查,获得参与比对资格。每个能量照射两个TLD样品,照射剂量为2 Gy,并填写数据表格。将TLD及数据表邮寄回IAEA实验室。IAEA测量后给出比对结果。结果 6 MV光子束的两个TLD剂量均值为2.00 Gy,平均偏差为0.0%,10 MV光子束的两个TLD剂量均为2.02 Gy,平均偏差为-0.8%。结论按照IAEA标准的允许偏差±5%考虑,本次比对结果符合比对要求。
Objective To check the accuracy of medical accelerator dose by participating in international comparisons by postal TLD organized by the IAEA/WHO.Methods Apply for the IAEA/WHO postal TLD dose audit to obtain the participation qualification.For each energy condition,irradiate the 2 TLD samples at an irradiation dose of 2 Gy and fill out the data sheet.Mail the TLDs and data sheet back to the IAEA lab,and the results were given after the IAEA measurements.Results The mean measured dose of the 6 MV photon beam was 2.00 Gy with an average deviation of 0.0%,and the doses for 2 TLDs irradiated at 10 MV photon beam were both 2.02 Gy with an average deviation of-0.8%.Conclusion The comparison results met the requirement within allowable deviation of±5%set by IAEA.
作者
赵红福
赵志鹏
王志强
程光惠
ZHAO Hongfu;ZHAO Zhipeng;WANG Zhiqiang;CHENG Guanghui(Department of Radiation Oncology,China-Japan Union Hospital of Jilin University,Changchun 130033 China)
出处
《中国辐射卫生》
2019年第1期69-71,共3页
Chinese Journal of Radiological Health
基金
吉林省卫生计生委项目(2014ZC054)
吉林省科技厅自然基金(白求恩专项)项目(20160101079JC)
吉林大学横向课题(2015373)
