NDLI: A novel V-line Radon transform and its imaging applications

Content Provider	IEEE Xplore Digital Library
Author	Morvidone, M. Truong, T.T. Nguyen, M.K. Zaidi, H.
Copyright Year	2010
Description	Author affiliation: Equipes Traitement de l'Information et Systèmes, CNRS 8051/ ENSEA / Université de Cergy-Pontoise, F-95302, France (Nguyen, M.K.) \|\| Geneva University Hospital, Division of Nuclear Medicine, CH-1211, Switzerland (Zaidi, H.) \|\| Laboratoire de Physique Théorique et Modélisation, CNRS 8089/ Université de Cergy-Pontoise, F-95302, France (Morvidone, M.; Truong, T.T.)
Abstract	Conventional tomographies (e.g. X-ray scanner, Positron Emission Tomography), functioning on primary radiation are modeled by the Radon transform (RT) which is an integral transform defined on straight lines. In this paper, we consider a new RT defined on a pair of half-lines forming a letter V, which arises from modeling two-dimensional emission imaging process by Compton scattered gamma rays. We give its definition and establish its analytic inverse to support the feasibility of the reconstruction of a two-dimensional (2D) image from scattered radiation measured on a one-dimensional collimated camera. Moreover, a filtered back-projection inversion method is also constructed. Its main advantages are algorithmic efficiency and computational rapidity. We present numerical simulations to illustrate the working. To sum up, the V-line RT leads not only to a new imaging principle, but also to a new concept of detector with high energetic resolution capable to collect the scattered radiation.
Starting Page	629
Ending Page	632
File Size	336357
Page Count	4
File Format	PDF
ISBN	9781424479924
ISSN	15224880
e-ISBN	9781424479948
e-ISBN	9781424479931
DOI	10.1109/ICIP.2010.5653835
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-09-26
Publisher Place	Hong Kong
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Transforms Image reconstruction Photonics Cameras TV Detectors tomography Radon transforms image reconstruction nuclear imaging
Content Type	Text
Resource Type	Article

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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
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