Thermal dose of experimental animals exposed in electromagnetic field
10.3969/j.issn.1005-202X.2024.01.013
- VernacularTitle:电磁场暴露中实验动物的热剂量学研究
- Author:
Jiajin LIN
1
;
Jing LI
;
Guirong DING
Author Information
1. 空军军医大学军事预防医学系辐射防护医学教研室/特殊作业环境危害评估与防治教育部重点实验室,陕西西安 710032
- Keywords:
electromagnetic field;
heat transfer;
dose;
temperature;
boundary condition
- From:
Chinese Journal of Medical Physics
2024;41(1):88-94
- CountryChina
- Language:Chinese
-
Abstract:
The study explores the thermal dose of experimental animals exposed in electromagnetic field.The simulation environment containing electromagnetic and thermal doses is established based on the bioheat equation and the three-dimensional rat model,and the effects of specific absorption rate,metabolic rate and boundary condition on temperature distribution and variation are assessed.The result shows that the core temperature rises with increasing whole body average specific absorption rate(WBASAR).At WBASAR of 4 W/kg,the midbrain and testes have higher specific absorption rates due to the skin effect,resulting in a more significant temperature rise in organ tissues than in the core;and at WBASAR of 0.4 W/kg,the temperature variation of the shallow organs caused by the sudden changes of metabolic and external environment reaches 1℃,which is much larger than that of the core.The experiment demonstrates target organs such as the head and testicles as critical subjects in thermal dose assessment.The experimental conditions should be regulated to reduce the effects of metabolic rate and boundary condition on thermal dose.The study has guiding significance for bioelectromagnetic experimental design and effect evaluation on thermal dose.
