陈维, 杨小勇, 秦永春, 马加一, 陈群, 冯子雅, 余宁乐. 入射体表剂量调查的质量控制[J]. 环境与职业医学, 2013, 30(9): 696-698.
引用本文: 陈维, 杨小勇, 秦永春, 马加一, 陈群, 冯子雅, 余宁乐. 入射体表剂量调查的质量控制[J]. 环境与职业医学, 2013, 30(9): 696-698.
CHEN Wei , YANG Xiao-yong , QIN Yong-chun , MA Jia-yi , CHEN Qun , FENG Zi-ya , YU Ning-le . Quality Control of a Thermoluminescence Detection System in Entrance Surface Dose Investigation[J]. Journal of Environmental and Occupational Medicine, 2013, 30(9): 696-698.
Citation: CHEN Wei , YANG Xiao-yong , QIN Yong-chun , MA Jia-yi , CHEN Qun , FENG Zi-ya , YU Ning-le . Quality Control of a Thermoluminescence Detection System in Entrance Surface Dose Investigation[J]. Journal of Environmental and Occupational Medicine, 2013, 30(9): 696-698.

入射体表剂量调查的质量控制

Quality Control of a Thermoluminescence Detection System in Entrance Surface Dose Investigation

  • 摘要: 目的 分析放射诊断受检者入射体表剂量监测用热释光(TLD)检测系统质量控制措施,提高测量结果的可靠性。

    方法 在二级标准剂量学实验室对用于入射体表剂量调查的TLD剂量元件照射标准曲线和盲样比对,同时通过标准化的测量程序及设备的定期校正等来控制检测系统的监测质量。

    结果 个人剂量与入射体表剂量盲样比对结果评定值与约定真值的偏差均小于& #177;10%;三条标准曲线具有良好的线性(相关系数分别为0.999 8、0.999 6和0.999 9)。

    结论 本实验室热释光(TLD)检测系统的质量控制符合国家有关规范要求,监测结果准确可靠,能保障放射诊断受检者入射体表剂量调查的顺利进展。

     

    Abstract: Objective To analyze quality control of a thermoluminescence detection system (TDS) in the investigation of patients' entrance surface doses (ESD) so as to improve the reliability of the measurement.

    Methods Standard curve of thermoluminescence dosimeters (TLDs) used in the investigation and dose comparison of blinded radiation samples were performed in a secondary standard dosimetry laboratory. Standardized measuring procedures and regular equipment calibration were adopted to control the monitoring quality of the TDS.

    Results The differences between the detected blinded samples' values and true values were less than& #177;10%. Three standard curves presented good linearity (the correlations coefficients were 0.999 8, 0.999 6, and 0.999 9, respectively).

    Conclusion The quality control of the TDS is in line with the requirements of relevant national standards. The monitoring results are accurate and reliable, and therefore can guarantee the patients' ESD investigation.

     

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