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Abstract：
OBJECTIVE: The issue of exposure of eye lenses of employees exposed to ionizing radiation is an interesting topic not only from the point of view of deterministic effects related to the occurrence of cataracts, but also dosimetric aspects, in particular the calibration of detectors in units enabling the assessment of eye lens exposure or personal dose equivalent Hp(3). The paper presents the idea of calibrating thermoluminescent detectors designed for the Hp(3) values measurement of gamma radiation, which the source is the process of annihilation of positrons emitted by the deoxyglucose marker - 18F radionuclide.
METHODS: The method was based on the value of air kerma Ka to Hp(3) conversion coefficients (Hp(3,0°)/Ka) developed as part of the ORAMED project. High-sensitivity thermoluminescent detectors (MCP-N) produced in Poland were used in the measurements. During the exposure of the detectors, a 137Cs gamma radiation source (irradiator 137Cs/60Co) and a 20cm diameter cylinder filled with water were used.
CONCLUSIONS: The value of conversion coefficient Hp(3,0°)/Ka for energy 511 keV is 1.31Sv/Gy and the calibration factor is (3.46±0.03)·10-4 mSv/N (N - number of counts). Verification of the value of the obtained coefficient carried out using a cylinder with a diameter of 20cm showed a difference of less than 2% in relation to the value obtained by the method described in this paper.
METHODS: The method was based on the value of air kerma Ka to Hp(3) conversion coefficients (Hp(3,0°)/Ka) developed as part of the ORAMED project. High-sensitivity thermoluminescent detectors (MCP-N) produced in Poland were used in the measurements. During the exposure of the detectors, a 137Cs gamma radiation source (irradiator 137Cs/60Co) and a 20cm diameter cylinder filled with water were used.
CONCLUSIONS: The value of conversion coefficient Hp(3,0°)/Ka for energy 511 keV is 1.31Sv/Gy and the calibration factor is (3.46±0.03)·10-4 mSv/N (N - number of counts). Verification of the value of the obtained coefficient carried out using a cylinder with a diameter of 20cm showed a difference of less than 2% in relation to the value obtained by the method described in this paper.
摘要：
目的：暴露于电离辐射的员工的眼睛镜片的暴露问题是一个有趣的话题，不仅从与白内障发生相关的确定性效应的角度来看，还有剂量学方面，特别地,以能够评估眼睛晶状体暴露或个人剂量当量Hp(3)的单位校准检测器。本文提出了校准设计用于伽马辐射的Hp（3）值测量的热释光探测器的想法，其来源是由脱氧葡萄糖标记物-18F放射性核素发射的正电子的湮灭过程。
方法：该方法基于作为ORAMED项目的一部分开发的空气kermaKa至Hp（3）转换系数（Hp（3,0°）/Ka）的值。测量中使用了波兰生产的高灵敏度热释光探测器（MCP-N）。在探测器的曝光过程中，使用137Csγ辐射源(辐射器137Cs/60Co)和填充有水的20cm直径的圆柱体。
结论：能量511keV的转换系数Hp（3,0°）/Ka的值为1.31Sv/Gy，校准因子为（3.46±0.03）·10-4mSv/N（N-计数）。使用直径为20cm的圆柱体对所获得的系数的值进行的验证表明，与通过本文所述的方法获得的值相比，差异小于2％。
方法：该方法基于作为ORAMED项目的一部分开发的空气kermaKa至Hp（3）转换系数（Hp（3,0°）/Ka）的值。测量中使用了波兰生产的高灵敏度热释光探测器（MCP-N）。在探测器的曝光过程中，使用137Csγ辐射源(辐射器137Cs/60Co)和填充有水的20cm直径的圆柱体。
结论：能量511keV的转换系数Hp（3,0°）/Ka的值为1.31Sv/Gy，校准因子为（3.46±0.03）·10-4mSv/N（N-计数）。使用直径为20cm的圆柱体对所获得的系数的值进行的验证表明，与通过本文所述的方法获得的值相比，差异小于2％。
