NDLI: Investigation of scatter in singles-based PVI transmission imaging

Content Provider	IEEE Xplore Digital Library
Author	Miyaoka, R.S. Costa, W.L.S. Harrison, R.L. Lewellen, T.K.
Copyright Year	1996
Description	Author affiliation: Med. Center, Washington Univ., Seattle, WA, USA (Miyaoka, R.S.; Costa, W.L.S.; Harrison, R.L.; Lewellen, T.K.)
Abstract	Singles-based positron volume imaging (PVI) transmission scans can provide measured 3D attenuation correction factors (ACFs) while requiring relatively short scan times (4-5 minutes). The main concern associated with singles-based transmission measurements is bias in the ACFs caused by scattered events in the transmission data. The magnitude and spatial characteristics of this scatter were investigated through computer simulation. Objects simulated include right circular cylinders of varying diameters, a 32 cm by 24 cm right elliptical cylinder, and the voxel.man digital phantom. Results indicated that scatter is very object dependent. For all objects simulated single scatter events comprised at least 70% of the total detected scatter. Furthermore, the shape of the scatter distribution was primarily determined by the single scatter events. Because the scatter distribution is very object dependent it is unlikely that simple correction techniques (e.g. fitting scatter tails or convolution subtraction) will prove effective. On the other hand because most of the detected scatter are single scatters, analytical methods which can accurately model single scatter events should provide the basis for an accurate scatter correction.
Starting Page	1771
Ending Page	1775
File Size	463264
Page Count	5
File Format	PDF
ISBN	078033180X
DOI	10.1109/NSSMIC.1995.501928
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1995-10-21
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Scattering Computational modeling Event detection Positrons Attenuation measurement Volume measurement Computer simulation Imaging phantoms Discrete event simulation Object detection
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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