Simulation and analysis of an imaging detection device for wound contamination caused by transuranic nuclides
Objective To address the radioactive contamination of wounds caused by transuranic nuclides,wound radi-ation 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 un-der 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 simu-lation time.Conclusion According to the simulation results,the parameters of the imaging system can be used to effect-ively image radioactive contamination.Our results provide methodological support for the measurement of wound contamin-ation caused by transuranic nuclides,and lay the foundation for the development of wound contamination imaging detection systems in the future.
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