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公开(公告)号：US20220330907A1
公开(公告)日：2022-10-20
申请号：US17230499
申请日：2021-04-14
Applicant: CANON MEDICAL SYSTEMS CORPORATION
Inventor： Liang CAl , Wenyuan QI , Xiaochun LAl , Peng PENG
Abstract: Multiple interactions, such as Compton scattering, inside a PET detector are used to predict an incident photon's direction for identifying true coincidence events versus scatter/random coincidence events by creating a cone shaped shell projection defining a range of possible flight directions for the incident photon. The disclosed techniques can be used as prior information to improve the image reconstruction process. The disclosed techniques can be implemented in a LYSO/SiPM-based layer stacked detector, which can precisely register multiple interactions' 3D position.
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