Study on Light Guide Thickness Optimization of DOI Detector using Light Guides of Different Patterns; 다양한 패턴의 광가이드를 사용한 반응 깊이 측정 검출기의 광가이드 두께 최적화 연구

초록

The scintillator of the small animal PET detector is very small and a long shape, so excellent spatial resolution can be achieved. However, this scintillation pixel causes a decrease in spatial resolution in the outskirts of the field of view. To solve this problem, in a previous study, we stacked scintillator blocks in four layers and inserted light guides with different reflector patterns between each layer to design a depth of interaction detector. In this study, we attempted to find the optimal combination of light guide thicknesses to obtain optimal flood images by composing various combinations of the thickness of the light guide used for each layer. For this, A detector was designed using DETECT2000, and the flood images evaluated for the degree of separation according to each light guide thickness combination. As a result, it was possible to find the optimal combination of light guide thicknesses, which improved the degree of separation by 52.26% compared to the original case. © 2024 Korean Physical Society. All rights reserved.

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