TY - GEN
T1 - Research of Photon Counting Dual-energy X-ray Absorptiometry Based on SiPM
AU - Wu, Zhongyi
AU - Du, Qiang
AU - Mo, Jingqing
AU - Tsui, Benjamin M.W.
AU - Sun, Mingshan
AU - Xi, Daoming
AU - Yuan, Gang
AU - Zheng, Jian
AU - Yang, Xiaodong
N1 - Funding Information:
This research is sponsored in part by The National Key Research and Development Program of China (No. 2016YFF0101303 and No.2016YFC0103502)
Funding Information:
V. ACKNOWLEDGEMENT This research is sponsored in part by The National Key Research and Development Program of China (No. 2016YFF0101303 and No.2016YFC0103502) ; in part by National Natural Science Foundation of China (NSFC) (No. 61701492); in part by The Nature Science Foundation of Jiangsu Province (No.BK20170392); in part by The Wenzhou Science and Technology Foundation (No. Y20170103).
Publisher Copyright:
© 2018 IEEE.
PY - 2018/11
Y1 - 2018/11
N2 - Recently there has been an increase of clinical cases of osteoporosis due to an increase in the ageing population. As an established diagnostic tool for osteoporosis, dual-energy x-ray absorptiometry (DEXA) is widely used due to its high accuracy, precision and image quality. In recent years, a new type of silicon-based photomultipliers, SiPMs, has been developed which has high potential to be used in photon counting DEXA detectors for its compact size and reliable performance. In this work, we designed a DEXA test platform with a SiPM and evaluated its performance using various bone density imaging parameters. The experimental DEXA platform is constructed with a fan-beam geometry consisting of an x-ray source from Spellman and a self-developed scanning motion control system. We studied the performance characteristics of a 64-channel YSO/SiPM array detector and compared them with a cadmium zinc telluride (CZT) detector. The maximum-likelihood (ML) estimation method was used to optimize the surface fitting algorithm to achieve high material decomposition accuracy. The results show the average error of the YSO/SiPM detector is 1.24% for PMMA and 1.72% for Al. We conclude the YSO/SiPM detector can achieve material decomposition accuracy close to CZT detector and it has the potential in DEXA imaging with good imaging performance characteristics at low cost.
AB - Recently there has been an increase of clinical cases of osteoporosis due to an increase in the ageing population. As an established diagnostic tool for osteoporosis, dual-energy x-ray absorptiometry (DEXA) is widely used due to its high accuracy, precision and image quality. In recent years, a new type of silicon-based photomultipliers, SiPMs, has been developed which has high potential to be used in photon counting DEXA detectors for its compact size and reliable performance. In this work, we designed a DEXA test platform with a SiPM and evaluated its performance using various bone density imaging parameters. The experimental DEXA platform is constructed with a fan-beam geometry consisting of an x-ray source from Spellman and a self-developed scanning motion control system. We studied the performance characteristics of a 64-channel YSO/SiPM array detector and compared them with a cadmium zinc telluride (CZT) detector. The maximum-likelihood (ML) estimation method was used to optimize the surface fitting algorithm to achieve high material decomposition accuracy. The results show the average error of the YSO/SiPM detector is 1.24% for PMMA and 1.72% for Al. We conclude the YSO/SiPM detector can achieve material decomposition accuracy close to CZT detector and it has the potential in DEXA imaging with good imaging performance characteristics at low cost.
KW - Bone Mineral Density
KW - DEXA
KW - Photon Counting
KW - SiPM
UR - http://www.scopus.com/inward/record.url?scp=85073095649&partnerID=8YFLogxK
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U2 - 10.1109/NSSMIC.2018.8824539
DO - 10.1109/NSSMIC.2018.8824539
M3 - Conference contribution
AN - SCOPUS:85073095649
T3 - 2018 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2018 - Proceedings
BT - 2018 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2018 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2018 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2018
Y2 - 10 November 2018 through 17 November 2018
ER -