Selected dosimetric performance tests on four types of extremity dosimeters
10.13491/j.issn.1004-714X.2025.06.009
- VernacularTitle:四种肢端剂量计的部分剂量学性能测试
- Author:
Qiuqiu PAN
1
;
Yajuan FENG
1
;
Haichao HUANG
1
;
Lihua HUANG
1
Author Information
1. Fujian Center for Prevention and Control of Occupational Diseases and Chemical Poisoning, Fuzhou 350025, China.
- Publication Type:OriginalArticles
- Keywords:
Thermoluminescence;
Extremity dosimeter;
Ring dosimeter;
Wrist dosimeter;
Nonlinear response;
Energy response
- From:
Chinese Journal of Radiological Health
2025;34(6):837-840
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the selected dosimetric performance of four types of thermoluminescent extremity dosimeters, and to provide a reference for selecting devices for extremity and skin dose monitoring. Methods In accordance with the IEC 62387-2020 standard, photon and β-ray irradiation tests were conducted on four types of thermoluminescent extremity dosimeters (A, B, C, D), which were composed of different dose holders and detector configurations. Linear regression analysis was performed. Technical indicators including nonlinear response, coefficient of variation, and energy response were calculated. Results Dosimeters A, B, C, and D all exhibited excellent linearity with R2 > 0.999. The nonlinear response ranges were 0.93-1.03, 0.99-1.06, 0.92-1.04, and 0.95-1.02 for dosimeters A, B, C, and D, respectively. The coefficients of variation were all below the standard limits. The energy response ranges were 0.79-1.27, 0.83-1.24, 0.76-1.21, and 0.15-0.36 for dosimeters A, B, C, and D, respectively. Conclusion Dosimeters A, B, and C meet the technical requirements of IEC 62387-2020 for extremity dosimeters used in photon monitoring in terms of nonlinear response, coefficient of variation, and energy response. They are suitable for extremity and skin dose monitoring in photon-dominated scenarios, such as radiological diagnosis/therapy and industrial radiation. Dosimeter D satisfies the technical requirements in the standard for extremity dosimeters used in β-ray monitoring in terms of nonlinear response and coefficient of variation, but exhibits a defect in β-ray energy dependence. It is recommended to optimize the dosimeter window and detector sensitive layer or introduce an energy compensation algorithm to enhance its adaptability to a broad energy spectrum. This study provides experimental support for the quality control and technical improvement of extremity dose monitoring equipment.
