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

fYear

2011

fDate

23-29 Oct. 2011

Firstpage

3300

Lastpage

3304

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2011 IEEE

Conference_Location

Valencia

ISSN

1082-3654

Print_ISBN

978-1-4673-0118-3

Type

conf

DOI

10.1109/NSSMIC.2011.6152594

Filename

6152594