Title :
Evaluation of APD and SiPM matrices as sensors for monolithic PET detector blocks
Author :
De Acilu, P. García ; Mendes, P. Rato ; Cañadas, M. ; Sarasola, I. ; Cuerdo, R. ; Romero, L. ; Willmott, C.
Author_Institution :
CIEMAT (Centro de Investig. Energeticas, Medioambientales y Tecnol.), Madrid, Spain
Abstract :
Gamma detectors based on monolithic scintillator blocks coupled to APDs matrices have proved to be a good alternative to pixelated ones for PET scanners. They provide comparable spatial resolution, improve the sensitivity and make easier the mechanical design of the system. In this study we evaluate by means of Geant4-based simulations the possibility of replacing the APDs by SiPMs. Several commercial matrices of light sensors coupled to LYSO:Ce monolithic blocks have been simulated and compared. Regarding the spatial resolution and linearity of the detector, SiPMs with high photo detection efficiency could become an advantageous replacement for the APDs.
Keywords :
gamma-ray detection; positron emission tomography; silicon radiation detectors; APD matrix evaluation; Geant4-based simulations; PET scanners; SiPM matrix evaluation; comparable spatial resolution; gamma detectors; monolithic PET detector blocks; monolithic scintillator blocks; photo detection efficiency; system mechanical design; Sensors;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2011 IEEE
Conference_Location :
Valencia
Print_ISBN :
978-1-4673-0118-3
DOI :
10.1109/NSSMIC.2011.6152594
