Position-sensitive SiPMs (PS-SiPMs) are promising photodetectors for high-resolution small animal positron emission tomography (PET) scanners. With the ultimate goal of developing a 0.5 mm resolution small-animal PET scanner, we developed 10 x 10 mm 2 linearly graded SiPMs (LG-SiPMs), a type of PS-SiPMs. In this paper, the performance of depth-of-interaction encoding dual-ended readout detectors based on these LG-SiPMs and LYSO arrays with a pitch of 0.5 mm and a thickness of 20 mm were evaluated. The flood histogram shows the crystal elements were clearly resolved. The average energy resolution and timing resolution across the LYSO array are 22.3 ± 9.4% and 0.99 ± 0.02 ns, respectively.
Evaluation of 10 × 10 mm2 Linearly Graded SiPMs for High-resolution Small-animal PET
Merzi, S.;Paternoster, G.;Gola, A.;
2023-01-01
Abstract
Position-sensitive SiPMs (PS-SiPMs) are promising photodetectors for high-resolution small animal positron emission tomography (PET) scanners. With the ultimate goal of developing a 0.5 mm resolution small-animal PET scanner, we developed 10 x 10 mm 2 linearly graded SiPMs (LG-SiPMs), a type of PS-SiPMs. In this paper, the performance of depth-of-interaction encoding dual-ended readout detectors based on these LG-SiPMs and LYSO arrays with a pitch of 0.5 mm and a thickness of 20 mm were evaluated. The flood histogram shows the crystal elements were clearly resolved. The average energy resolution and timing resolution across the LYSO array are 22.3 ± 9.4% and 0.99 ± 0.02 ns, respectively.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
