Title :
Front-end electronics for a 1 mm3 resolution avalanche photodiode-based PET system with analog signal multiplexing
Author :
Lau, Frances W.Y. ; Vandenbroucke, Arne ; Reynolds, Paul D. ; Olcott, Peter D. ; Horowitz, Mark A. ; Levin, Craig S.
Author_Institution :
Department of Electrical Engineering at Stanford University, USA
Abstract :
We are developing a 1 mm3 resolution breast-dedicated Positron Emission Tomography (PET) system with 4608 Position Sensitive Avalanche Photodiode (PSAPD) detectors. This paper focuses on three aspects of the system’s front-end electronics: multiplexing of the PSAPD analog output signals, scaling the dynamic range of the PSAPD output signals using charge attenuation, and positioning of individual interaction energy depositions that are below the 511 keV photo-peak.
Keywords :
Attenuation; Avalanche photodiodes; Circuits; Degradation; Dynamic range; Energy resolution; Position sensitive particle detectors; Positron emission tomography; Signal resolution; Solid scintillation detectors;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2008. NSS '08. IEEE
Conference_Location :
Dresden, Germany
Print_ISBN :
978-1-4244-2714-7
Electronic_ISBN :
1095-7863
DOI :
10.1109/NSSMIC.2008.4774127