TY - GEN
T1 - A dual-layer TOF-DOI detector block for whole-body PET
AU - Liu, Shitao
AU - An, Shaohui
AU - Li, Hongdi
AU - Wang, Chao
AU - Ramirez, Rocio A.
AU - Zhang, Yuxuan
AU - Baghaei, Hossain
AU - Wong, Wai Hoi
N1 - Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2011
Y1 - 2011
N2 - We developed a dual-layer high-resolution detector block for whole-body positron-emission tomography systems. The top layer is a 13x13 array of lutetium yttrium orthosilicate (LYSO) crystals (2.85x2.85x10mm3) and the bottom layer a 13x13 array of lutetium gadolinium oxyorthosilicate (LGSO) crystals (2.85x2.85x10mm3). The LGSO layer was coupled to four Hamamatsu R11194HA photomultiplier tubes (PMTs) by a photomultiplier quadrant-sharing configuration. This block has both time-of-flight and depth-of-interaction functions. Using a Na-22 position source, the performance of this block was evaluated by coinciding with a reference detector which consisted of a 4x4x10mm3 LYSO crystal coupled to a Hamamatsu R9779 PMT. A total of 4.7% of the counts were mixed among the two layers. The LYSO layer had 11.4% energy resolution and 329ps coincidence time resolution. The LGSO layer had 14.8% energy resolution and 356ps coincidence time resolution. Index Termspositron emission tomography (PET), time of flight (TOF), depth of interaction (DOI), lutetium yttrium orthosilicate (LYSO), lutetium gadolinium oxyorthosilicate (LGSO), photomultiplier quadrant sharing (PQS)
AB - We developed a dual-layer high-resolution detector block for whole-body positron-emission tomography systems. The top layer is a 13x13 array of lutetium yttrium orthosilicate (LYSO) crystals (2.85x2.85x10mm3) and the bottom layer a 13x13 array of lutetium gadolinium oxyorthosilicate (LGSO) crystals (2.85x2.85x10mm3). The LGSO layer was coupled to four Hamamatsu R11194HA photomultiplier tubes (PMTs) by a photomultiplier quadrant-sharing configuration. This block has both time-of-flight and depth-of-interaction functions. Using a Na-22 position source, the performance of this block was evaluated by coinciding with a reference detector which consisted of a 4x4x10mm3 LYSO crystal coupled to a Hamamatsu R9779 PMT. A total of 4.7% of the counts were mixed among the two layers. The LYSO layer had 11.4% energy resolution and 329ps coincidence time resolution. The LGSO layer had 14.8% energy resolution and 356ps coincidence time resolution. Index Termspositron emission tomography (PET), time of flight (TOF), depth of interaction (DOI), lutetium yttrium orthosilicate (LYSO), lutetium gadolinium oxyorthosilicate (LGSO), photomultiplier quadrant sharing (PQS)
UR - http://www.scopus.com/inward/record.url?scp=84863391353&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84863391353&partnerID=8YFLogxK
U2 - 10.1109/NSSMIC.2011.6152540
DO - 10.1109/NSSMIC.2011.6152540
M3 - Conference contribution
AN - SCOPUS:84863391353
SN - 9781467301183
T3 - IEEE Nuclear Science Symposium Conference Record
SP - 3008
EP - 3011
BT - 2011 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2011
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2011 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2011
Y2 - 23 October 2011 through 29 October 2011
ER -