γ刀治疗源端面辐射输出量率测量结果不确定度评定

Uncertainty Evaluation Measurement Result ofγKnife Therapy Sources Radiation Output Rate

介绍了影响γ刀治疗源端面辐射输出量率测量结果不确定度的因子,并描述分析了不同因子对测量结果不确定度的影响与贡献。通过分析得出端面辐射输出量率的测量结果扩展不确定度为3.62%。对同一套γ刀治疗源辐射输出量率的测量结果进行对比验证表明:两方测量结果高度一致,进一步验证了不确定度的准确性、稳定性和本测量系统的可靠性。

The factors affecting the uncertainty of the measurement results ofγknife therapy source radiation output rate are introduced,the influence and contribution of different factors to the uncertainty of the measurement results are described and analyzed.The results show that the expanded uncertainty of the measured radiation output rate is 3.62%.The measurement results of the same set ofγknife therapy sources radiation output rate were compared and verified.The re-sults of the two measurements were consistent,which further verified the accuracy,stability and reliability of the measurement system.