NDLI: Initial implementation of LYSO-PSPMT block detector with an all digital DAQ system

Content Provider	IEEE Xplore Digital Library
Author	Qingguo Xie Yuanbao Chen Jun Zhu Xi Wang Jingjing Liu Wei Liu Yachao Jiang Ming Niu Zhongyi Wu Anwen Long Ning Guo Daoming Xi Peng Xiao Junxiong Gao Chin-Tu Chen Yunbo Wang Chien-Min Kao
Copyright Year	2010
Description	Author affiliation: Department of Control Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei, China (Yuanbao Chen; Wei Liu) \|\| Wuhan National Laboratory for Optoelectronics, Wuhan, Hubei, China (Qingguo Xie; Jun Zhu; Xi Wang; Yachao Jiang; Ming Niu; Zhongyi Wu; Anwen Long; Ning Guo; Daoming Xi; Peng Xiao) \|\| School of Computer Science and Technology, Huazhong University of Science and Technology, Wuhan, Hubei, China (Jingjing Liu) \|\| Department of Electronic Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei, China (Junxiong Gao; Yunbo Wang) \|\| Department of Radiology, the University of Chicago, Chicago, IL, USA (Chin-Tu Chen; Chien-Min Kao)
Abstract	An all-digital positron emission tomography (PET) scanner for imaging small animals has been developed at Huazhong University of Science and Technology (HUST). The implementation of block detector with position sensitive photomultiplier (PSPMT) and multi-voltage threshold (MVT) technology is presented in this paper. The detector comprises 12 basic detector modules (BDMs), which can be used to construct various types of PET scanner architecture due to the modularized design. Each BDM is composed of a detector unit (DU) and a digital processing unit (DPU). The scintillation pulses are obtained in DU, from which the time, energy and position can be derived and processed in DPU by using digital signal processing (DSP) algorithm. Then coincidence data and list-mode data can be obtained in soft singles processing unit (SSPU). We arrange two BDMs as a dual-head PET scanner to evaluate the system. Our results show that the average energy resolution is ∼14%@511keV full-width-at-half-maximum (FWHM) and the coincidence time determination is ∼1.38 ns FWHM. Moreover, the reconstructed image of a homemade micro-Derenzo phantom shows that the rods with a diameter of 1.6mm can be clearly distinguished. The results are promising and demonstrate the potentials of the alldigital PET system.
Starting Page	1759
Ending Page	1762
File Size	2744339
Page Count	4
File Format	PDF
ISBN	9781424491063
ISSN	10957863
e-ISBN	9781424491056
DOI	10.1109/NSSMIC.2010.5874076
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-10-30
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Detectors Positron emission tomography Data acquisition Image reconstruction Crystals Phantoms Energy resolution
Content Type	Text
Resource Type	Article

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