Silicon Photomultipliers are used in many new generation PET block detectors. High granularity pixel SiPMs allow a high precision measurement of the photon interaction coordinates along the crystal surface. In order to further improve the resolution it is necessary to measure the photon Depth of Interaction (DOl), so as to reduce the parallax error in the Line of Response reconstruction. An innovative technique for DOl determination is proposed and tested. Measurements are made with a 2 cm × 2 cm × 1 cm LYSO slab with readout on the front and back large sides by means of two 4 × 4 square SiPM pixel matrices of 5 mm pitch. The data acquisition is based on the new BASIC32 chip read out with an FPGA-based system.
SiPM-based PET Module with Depth of Interaction / Pennazio, F.; Ambrosi, G.; Bisogni, M. G.; Cerello, P.; Corsi, F.; Del Guerra, A.; Ionica, M.; Marino, N.; Marzocca, C.; Morrocchi, M.; Peroni, C.; Pirrone, G.; Santoni, C.; Wheadon, R.. - STAMPA. - (2012), pp. 3786-3789. (Intervento presentato al convegno IEEE Nuclear Science Symposium and Medical Imaging Conference Record, NSS/MIC 2012 tenutosi a Anheim, California (USA) nel 29 ottobre 2012).
SiPM-based PET Module with Depth of Interaction
Corsi, F.;Marzocca, C.;
2012-01-01
Abstract
Silicon Photomultipliers are used in many new generation PET block detectors. High granularity pixel SiPMs allow a high precision measurement of the photon interaction coordinates along the crystal surface. In order to further improve the resolution it is necessary to measure the photon Depth of Interaction (DOl), so as to reduce the parallax error in the Line of Response reconstruction. An innovative technique for DOl determination is proposed and tested. Measurements are made with a 2 cm × 2 cm × 1 cm LYSO slab with readout on the front and back large sides by means of two 4 × 4 square SiPM pixel matrices of 5 mm pitch. The data acquisition is based on the new BASIC32 chip read out with an FPGA-based system.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
