NDLI: Exact rebinning methods for 3D PET

Content Provider	IEEE Xplore Digital Library
Author	Liu Xuan Defrise, M. Michel, C. Sibomana, M. Comtat, C. Kinahan, P. Townsend, D.
Copyright Year	1999
Description	Author affiliation: Div. of Nucl. Med., Vrije Univ., Brussels, Belgium (Liu Xuan)
Abstract	The high computational cost of data processing in volume PET imaging is still hindering the routine application of this successful technique, especially in the case of dynamic studies. This paper describes two new algorithms based on an exact rebinning equation, which can be applied to accelerate the processing of 3D PET data. The first algorithm, FOREPROJ, is a fast forward projection algorithm which allows, for example, to calculate 3D attenuation correction factors (ACFs) directly from a 2D transmission scan, without reconstructing the attenuation map as in the standard procedure. The use of FOREPROJ speeds up the estimation of the 3D ACFs by more than a factor 5. The second algorithm, FOREX, is a new rebinning algorithm which is also more than 5 times faster than the standard method (the reprojection algorithm, 3DRP), without suffering from the image distortions generated by the approximate Fourier rebinning (FORE) at large axial apertures. Both algorithms have been implemented and applied to data simulated for a scanner with a large axial aperture (30/spl deg/), and also to data acquired with the ECAT HR and the ECAT HR+ scanners. Results demonstrate the important speed-up and the excellent accuracy achieved by these algorithms.
Starting Page	1604
Ending Page	1609
File Size	669400
Page Count	6
File Format	PDF
ISBN	0780350219
ISSN	10823654
DOI	10.1109/NSSMIC.1998.773849
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1998-11-08
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Positron emission tomography Attenuation Apertures Computational efficiency Data processing Equations Acceleration Projection algorithms Image reconstruction Image generation
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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