NDLI: Reconstruction of real tomographic data using algebraic methods

Content Provider	IEEE Xplore Digital Library
Author	Gendron, David Goussard, Yves Beaudoin, Gilles Soulez, Gilles Cloutier, Guy
Copyright Year	2008
Description	Author affiliation: Centre de Recherche, Centre Hospitalier de l'Université de Montréal, Québec, Canada (Beaudoin, Gilles; Soulez, Gilles; Cloutier, Guy) \|\| Institut de Génie Biomédical, École Polytechnique de Montréal, Québec, Canada (Gendron, David; Goussard, Yves)
Abstract	We propose an algebraic image reconstruction method that can cope with the size and features of datasets produced by actual scanners, such as angular flying focal spot and detector offset. Image reconstruction is performed by minimizing a penalized least squares objective function by means of a preconditioned conjugate gradient (PCG) algorithm. Efficient implementation of the matrix-vector products that represent projection and backprojection operations is crucial to reconstruction speed, as such operations are performed at least once per iteration. For this purpose, we developed an efficient storage scheme for the projection matrix that allowed fast matrix-vector products. These features, along with an appropriate choice of the preconditioning matrix, yielded a numerically efficient method which produces results with better quality than those provided by usual filtered backprojection techniques.
Starting Page	2717
Ending Page	2720
File Size	166835
Page Count	4
File Format	PDF
ISBN	9781424418145
ISSN	1557170X
DOI	10.1109/IEMBS.2008.4649763
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-08-20
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Projection Matrix Computed Tomography Real Data Preconditioning Conjugate Gradient
Content Type	Text
Resource Type	Article
Subject	Signal Processing Biomedical Engineering Health Informatics Computer Vision and Pattern Recognition

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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
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
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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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