NDLI: Parallax correction in PET using depth of interaction information

Content Provider	IEEE Xplore Digital Library
Author	MacDonald, L.R. Dahlbom, M.
Copyright Year	1998
Description	Author affiliation: Div. of Nucl. Med., California Univ., Los Angeles, CA, USA (MacDonald, L.R.)
Abstract	The authors have investigated the restoration of radial resolution for transaxially off-center sources in a PET ring detector configuration using directly measured depth of interaction (DOI) information. Lutetium oxyorthosilicate (LSO) crystals are coupled to a photodetector along the radial dimension of the PET ring configuration. Four millimeter wide crystals are segmented into 4 mm and 10 mm lengths in the radial dimension and optically isolated so that scintillation light is localized to the radial extent of the segment, giving 4 mm and 10 mm DOI resolution. The authors also segmented 2 mm wide crystals into 10 mm lengths. This DOI technique is unambiguous but not practical for a multi-ring PET scanner. The objective here is to quantify the intrinsic radial resolution as a function of position within the FOV and DOI resolution. The authors found the degradation in radial resolution across 75% of the field of view was reduced by 45% (50%) with DOI resolution equal to one-half (one-third) the crystal length. Improved resolution via narrower crystals and worse resolution due to non-colinearity were both overshadowed by DOI effects at 75% off-center positions in 30 mm deep crystals with 10 mm of DOI resolution.
Starting Page	1605
Ending Page	1609
File Size	593284
Page Count	5
File Format	PDF
ISBN	0780342585
ISSN	10823654
DOI	10.1109/NSSMIC.1997.670625
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-11-09
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Positron emission tomography Photonic crystals Spatial resolution Solid scintillation detectors Nuclear medicine USA Councils Nuclear measurements Couplings Photodetectors Biomedical optical imaging
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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