TY - GEN
T1 - Electronics for a prototype variable field of view PET camera using the PMT-quadrant-sharing detector array
AU - Li, Hongdi
AU - Wong, Wai Hoi
AU - Zhang, Nan
AU - Wang, Junming
AU - Uribe, Jorge
AU - Baghaei, Hossain
AU - Yokoyama, Shigeru
N1 - Copyright:
Copyright 2004 Elsevier Science B.V., Amsterdam. All rights reserved.
PY - 1999
Y1 - 1999
N2 - Electronics for a prototype high resolution PET camera with 8 modules of position sensitive detectors has been developed. Each module has 16 BGO blocks (each block is composed of 49 crystals). The design goals are component and space reduction. The electronics is composed of 5 parts: front-end analog processing, digital position decoding, fast timing, coincidence processing and master data acquisition. The front-end analog circuit is a zone based structure (each zone has 3×3 PMTs) with 8 trigger clusters (each cluster is composed of 6 PMTs) generating a trigger and identifying an active zone to be digitized by 9 ADCs. The trigger is sent to a fast timing board to get a time mark, and the 9 digitized signals are passed to the position decoding board, where a real block (4 PMTs) can be picked out from the zone for position decoding. Lookup tables are used for energy discrimination and to identify the gamma hit crystal location. The coincidence board opens a 70ns initial timing window, followed by two 20ns digital coincidence time mark look up table windows, to identify the true and accidental events. The data output from the coincidence board can be acquired either is sinogram mode or in list-mode with a Motorola/IRONICS VME-based system.
AB - Electronics for a prototype high resolution PET camera with 8 modules of position sensitive detectors has been developed. Each module has 16 BGO blocks (each block is composed of 49 crystals). The design goals are component and space reduction. The electronics is composed of 5 parts: front-end analog processing, digital position decoding, fast timing, coincidence processing and master data acquisition. The front-end analog circuit is a zone based structure (each zone has 3×3 PMTs) with 8 trigger clusters (each cluster is composed of 6 PMTs) generating a trigger and identifying an active zone to be digitized by 9 ADCs. The trigger is sent to a fast timing board to get a time mark, and the 9 digitized signals are passed to the position decoding board, where a real block (4 PMTs) can be picked out from the zone for position decoding. Lookup tables are used for energy discrimination and to identify the gamma hit crystal location. The coincidence board opens a 70ns initial timing window, followed by two 20ns digital coincidence time mark look up table windows, to identify the true and accidental events. The data output from the coincidence board can be acquired either is sinogram mode or in list-mode with a Motorola/IRONICS VME-based system.
UR - http://www.scopus.com/inward/record.url?scp=0032596183&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0032596183&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:0032596183
SN - 0780350227
T3 - IEEE Nuclear Science Symposium and Medical Imaging Conference
SP - 1227
EP - 1231
BT - IEEE Nuclear Science Symposium and Medical Imaging Conference
PB - IEEE
T2 - Proceedings of the 1998 IEEE Nuclear Science Symposium Conference Record
Y2 - 8 November 1998 through 14 November 1998
ER -