Simulation and analysis of an imaging detection device for wound contamination caused by transuranic nuclides
10.13491/j.issn.1004-714X.2024.03.006
- VernacularTitle:一种超铀核素致伤口污染成像探测装置的模拟和分析
- Author:
Yujian WANG
1
;
Wei WANG
1
;
Xinglong LI
1
;
Chuangao WANG
1
;
Hongchao PANG
1
;
Ling CHEN
1
Author Information
1. China Institute of Atomic Energy, Beijing 102413 China.
- Publication Type:OriginalArticles
- Keywords:
Coded aperture imaging;
Image reconstruction;
MLEM;
Gamma camera;
Wound radioactivity
- From:
Chinese Journal of Radiological Health
2024;33(3):260-266
- CountryChina
- Language:Chinese
-
Abstract:
Objective To address the radioactive contamination of wounds caused by transuranic nuclides, wound radiation imaging based on coded aperture imaging technology was investigated. Methods By simulating multiple source terms using Monte Carlo method, the differences in imaging performance between two image reconstruction algorithms under near-field conditions were compared. The effects of detector pixels and detection plane pixels on image resolution were investigated. Results The imaging system was simulated based on the designed dimensions. The simulated imaging field of view was 89.4 mm × 89.4 mm and the simulated angular resolution was 1.98°. Based on the comparison of the average width at half height of the reconstructed point sources under different conditions, it was found that increasing the number of pixels in the detector and detection plane optimized the angular resolution but significantly prolonged the Monte Carlo simulation time. Conclusion According to the simulation results, the parameters of the imaging system can be used to effectively image radioactive contamination. Our results provide methodological support for the measurement of wound contamination caused by transuranic nuclides, and lay the foundation for the development of wound contamination imaging detection systems in the future.
