Arc-PET: Cost-Effective Whole-Body Scanner with High Sensitivity and High Spatial Resolution

Current clinical positron emission tomography scanners are distinguished by their large, circular detector rings - necessary to minimize spatial blue from parallax and Compton scattering within the detector. Recent advances in detector capability, specifically depth-of-interaction (DOI) localization and Compton scatter recovery, enable alternative detector designs that are more conformal to the human body. In particular, the Prism- PET detector - a single-ended detector with a segmented light guide - has demonstrated potential in both DOI localization and Compton recovery. With this in mind, we propose a hexagonal detector geometry, Arc-PET, and develop analytical expressions to quantify the geometric efficiency and spatial resolution of the detector.