Performance tests of a portable thyroid radioiodine meter

Q1 Health Professions Radiation Medicine and Protection Pub Date : 2024-03-01 DOI:10.1016/j.radmp.2024.02.002

Zeshu Li , Zhijie Yang , Fei Tuo , Shuo Wang , Qianqian Zhou , Juncheng Liang

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Abstract

Objective

To evaluate the effectiveness of a portable thyroid radioiodine meter in on-site monitoring to enhance the monitoring precision of radioiodine inhaled by nuclear medicine staff and patients.

Methods

A portable thyroid radioiodine meter was developed to measure the ¹³¹I activity in the thyroid. Performance tests of the portable thyroid radioiodine meter were conducted using calibration sources and testing methodologies adhering to national metrological standards.

Results

The thyroid radioiodine meter exhibited integral non-linearity, 8-h measurement stability, measurement linearity, and an energy resolution of 0.42%, 1.05%, 1.56%, and 7.11%, respectively for ¹³⁷Cs at 661.66 keV. Additionally, its minimum detectable activity for ¹³¹I at 364.49 keV was approximately 22 Bq (10 min).

Conclusion

The developed thyroid radioiodine meter features elevated performance and great potential for application in nuclear medicine and monitoring of responses to nuclear or radiological emergencies.

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便携式甲状腺放射性碘测定仪的性能测试

目的评价便携式甲状腺放射性碘测量仪在现场监测中的有效性，以提高对核医学工作人员和患者吸入的放射性碘的监测精度。方法研发了一种便携式甲状腺放射性碘测量仪，用于测量甲状腺中的131I活度。结果甲状腺放射性碘仪在 661.66 keV 的 137Cs 测量中表现出积分非线性、8 h 测量稳定性、测量线性和能量分辨率分别为 0.42%、1.05%、1.56% 和 7.11%。此外，该仪器在 364.49 keV 波长下对 131I 的最小检测活度约为 22 Bq（10 分钟）。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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