NDLI: Advantages of digitally sampling scintillation pulses in pileup processing in PET

Content Provider	IEEE Xplore Digital Library
Author	Xi Wang Yuanbao Chen Quan Yin Shaoqun Zeng Qingguo Xie
Copyright Year	2009
Description	Author affiliation: Department of Biomedical Engineering, Huazhong University of Science and Technology, Wuhan, China (Xi Wang; Shaoqun Zeng; Qingguo Xie) \|\| Department of Control Science and Engineering, Huazhong University of Science and Technology, Wuhan, China (Yuanbao Chen; Quan Yin)
Abstract	Higher count rate detectors are needed for high sensitivity positron emission tomography (PET) scanners. However, the maximum count rate of the detectors is limited due to the large pileup quantity in the high count rate situation, in which pileups are rejected conventionally. In this paper, we investigate the development of a method for digitally sampling scintillation pulses for PET. We focus on employing the digital signal processing (DSP) technology for pileup events discrimination and processing, which can discriminate pileups and singles from multi-event pulses by the number of leading edges and then reconstruct each event pulse. With the application of this method, a pileup can be divided into two or more single pulses, therefore the timing and energy of a single event can be measured independently. The preliminary results show that the coincidence count rate can be increased obviously, and the timing resolution and energy resolution can be improved distinctively, so the results by using the DSP method are encouraging.
Starting Page	144
Ending Page	147
File Size	307476
Page Count	4
File Format	PDF
ISBN	9781424439614
ISSN	10957863
DOI	10.1109/NSSMIC.2009.5401834
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-10-24
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Sampling methods Positron emission tomography Digital signal processing Energy resolution Solid scintillation detectors Timing Noise shaping Signal resolution Degradation Biomedical engineering Scintillation Pulse Positron Emission Tomography (PET) Digital Signal Processing (DSP) Pileup
Content Type	Text
Resource Type	Article

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