NDLI: Optimization of Crystal Arrangement on 8-Layer DOI PET Detector

Content Provider	IEEE Xplore Digital Library
Author	Inadama, N. Murayama, H. Tsuda, T. Nishikido, F. Shibuya, K. Yamaya, T. Yoshida, E. Takahashi, K. Ohmura, A.
Copyright Year	2006
Description	Author affiliation: National Inst. of Radiol. Sci., Chiba (Inadama, N.; Murayama, H.; Tsuda, T.; Nishikido, F.; Shibuya, K.; Yamaya, T.; Yoshida, E.)
Abstract	Previously, we proposed an 8-layer depth-of-interaction (DOI) encoding method for a PET detector and proved its validity. The layer of interaction is identified by hybrid method: scintillation light control by the original reflector arrangement for 4-layer DOI encoding and pulse shape discrimination for 2-layer DOI encoding. In the 8-layer DOI detector, four layers then consist of the scintillator of different pulse shape from another scintillator for the other four layers. The two kind crystal layers can be arranged in two ways: stacked alternately (LSLS) or set in the upper and lower four layers (LLSS). Since the two crystal arrangements are expected to show different detector performance, we investigated the difference to understand the characteristics of the DOI detector for its optimization. $Gd_{2}SiO_{5}$ (GSO) crystals of 0.5 mol% Ce dopant and 1.5 mol% Ce dopant were used for the measurement. The former is in dimensions of 2.9 mm times 2.9 mm times 3.75 mm and the latter is 2.9 mm times 2.9 mm times 3.6 mm, respectively. The experimental results show better performance of the LLSS arrangement in pulse shape discrimination, while inferior in the 4-layer DOI encoding. There was no particular difference between the two crystal arrangements in light output and energy resolution of each layer.
Starting Page	3082
Ending Page	3085
File Size	973556
Page Count	4
File Format	PDF
ISBN	1424405602
ISSN	10957863
DOI	10.1109/NSSMIC.2006.356525
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-10-29
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Positron emission tomography Crystals Encoding Solid scintillation detectors Pulse shaping methods Shape control Chemicals Lighting control Crystalline materials Gas detectors
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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