TY - GEN
T1 - Low-cost high-resolution 3rd generation PMT-quadrant-sharing BGO block detectors for human and animal PET
AU - Liu, Shitao
AU - Kim, Soonseok
AU - Li, Hongdi
AU - Ramirez, Rocio A.
AU - Liu, Jiguo
AU - Wang, Yu
AU - Zhang, Yuxuan
AU - Baghaei, Hossain
AU - Wong, Wai Hoi
N1 - Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2006
Y1 - 2006
N2 - The objective of this work is to develop two 3rd generation PMT-Quadrant-Sharing (PQS) position-sensitive block detectors for animal PET and human PET. These very low-cost PQS block detectors could achieve very high decoding resolution of 1.82 (3.56) mm BGO crystals with Φ19 (39) mm size regular circular PMT. The first block detector was a 10×10 array built with 1.82 × 1.82 × 10 mm3 BGO crystals for animal PET systems; the second block detector was a 11×11 array built with 3.56 × 3.56 × 20 mm3 size BGO crystal for human PET systems. A very high crystal-decoding ratio of 100 BGO crystals per PMT was achieved for animal PET, and 121 BGO crystals per PMT was achieved for human PET. The packing fractions of these two blocks were 91% and 95%. List mode data of these detectors were acquired with Ga-68 source. Crystal-decoding maps and individual crystal spectra of the detectors were obtained from the data. All the crystals in both blocks are clearly identified. The pulse heights of all crystals in the 10×10 array range between 79% and 100% and those in the 11×11 array vary from 81% to 100%. The energy resolutions of all crystals were measured to be between 15.5 and 16.9% (average 16.1%) for the 10×10 array and 14.9 and 16.3% (average 15.4%) for the 11×11 array. Based on these detectors, low-cost very high-resolution human and animal PET systems with high sensitivity could be developed in the future.
AB - The objective of this work is to develop two 3rd generation PMT-Quadrant-Sharing (PQS) position-sensitive block detectors for animal PET and human PET. These very low-cost PQS block detectors could achieve very high decoding resolution of 1.82 (3.56) mm BGO crystals with Φ19 (39) mm size regular circular PMT. The first block detector was a 10×10 array built with 1.82 × 1.82 × 10 mm3 BGO crystals for animal PET systems; the second block detector was a 11×11 array built with 3.56 × 3.56 × 20 mm3 size BGO crystal for human PET systems. A very high crystal-decoding ratio of 100 BGO crystals per PMT was achieved for animal PET, and 121 BGO crystals per PMT was achieved for human PET. The packing fractions of these two blocks were 91% and 95%. List mode data of these detectors were acquired with Ga-68 source. Crystal-decoding maps and individual crystal spectra of the detectors were obtained from the data. All the crystals in both blocks are clearly identified. The pulse heights of all crystals in the 10×10 array range between 79% and 100% and those in the 11×11 array vary from 81% to 100%. The energy resolutions of all crystals were measured to be between 15.5 and 16.9% (average 16.1%) for the 10×10 array and 14.9 and 16.3% (average 15.4%) for the 11×11 array. Based on these detectors, low-cost very high-resolution human and animal PET systems with high sensitivity could be developed in the future.
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U2 - 10.1109/NSSMIC.2006.354265
DO - 10.1109/NSSMIC.2006.354265
M3 - Conference contribution
AN - SCOPUS:38749089825
SN - 1424405610
SN - 9781424405619
T3 - IEEE Nuclear Science Symposium Conference Record
SP - 1900
EP - 1903
BT - 2006 IEEE Nuclear Science Symposium - Conference Record
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2006 IEEE Nuclear Science Symposium, Medical Imaging Conference and 15th International Workshop on Room-Temperature Semiconductor X- and Gamma-Ray Detectors, Special Focus Workshops, NSS/MIC/RTSD
Y2 - 29 October 2006 through 4 November 2006
ER -