摘要
针对原IAEA 1987年版和IAEA 1986年版TRS.277中吸收剂量测量的不确定度评定与实际相差过大,不能满足临床应用时5.0%(k=2)要求的状况,依据IAEA 1996年第二版和1998年第二版的TRS.277号报告,参考TRS.398、TRS.381及其他相关技术资料,对医用60Co远距离治疗辐射源吸收剂量测量不确定度进行新的分析及评定,得到约为3.0(%k=2)的吸收剂量测量不确定度。实验结果表明,分析合理,其结果符合实际情况,满足临床应用要求。
In the IAEA TRS.277 version 1987 and 1986, the absorbed dose measurement uncertainty evaluation is of great difference from the actually situation, and can not meet the clinical requirement of 5.0% （k=2）. The measurement uncertainty of absorbed dose for ^60Co teletherapy equipment was re-analyzed and re-evaluated according to the TRS.277 2nd edition（both 1996 2nd edition and 1996 2nd edition）, referring to the TRS.398 and TRS.381 and other correlative data. The obtained uncertainty of dose measurement was about 3.0%（k=2）. The experimential results indicate that the analysis and evaluation in our work is reasonable, and the uncertainty complies with the actual situation, and matches the clinical requirement.
出处
《中国测试技术》
2008年第4期39-43,共5页
CHINA MEASUREMENT & TESTING TECHNOLOGY
