NDLI: Development of a positron-imaging detector with background rejection capability

Content Provider	IEEE Xplore Digital Library
Author	Yamamoto, S. Higashi, T. Matsumoto, K. Sakamoto, S. Senda, M.
Copyright Year	2004
Abstract	We developed and tested a positron-imaging detector with background rejection capability for FDG guided surgery. The detector consists of an array of phoswich scintillators, multi-channel position-sensitive photo-multiplier tube (PSPMT) and a electronics circuit. The scintillators and the PSPMT are encased in a tungsten shield and collimators are mounted on the top of the detector. Positrons are detected by the plastic scintillators while annihilation photons are detected by the BGOs. By using a pulse shape analysis, we can distinguish the true events (positrons) from background gamma events. The size of a plastic scintillator is 2mmtimes2mmtimes3mm and that of BGO is 2mmtimes2mmtimes15mm. These scintillators are optically coupled to each other and combined in 8times8 array. The array is optically coupled to the 1-inch square 8times8 multi-channel PSPMT through an optical fibers 2 mm in diameter 3 mm in thickness. The position determination of the positrons is performed by 64 channel threshold circuits while the pulse shape analysis is applied for the summing signal. The spatial resolution was measured by positioning an F-18 point source on the one pixel of the detector. The spillover to the neighbor pixel was less than 20%. The background count rate was less than 2cps for a 20 cm diameter, 20 cm height cylinder phantom contained 3.7MBq of F-18. Results indicated that developed positron-imaging detector will be useful for FDG-guided surgery
Starting Page	3061
Ending Page	3065
File Size	590968
Page Count	5
File Format	PDF
ISBN	0780387007
ISSN	10823654
e-ISBN	0780387015
DOI	10.1109/NSSMIC.2004.1466328
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-10-16
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Detectors Optical pulse shaping Optical arrays Positrons Surgery Plastics Shape Biomedical optical imaging Coupling circuits Optical coupling
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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