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Proceedings Paper

Properties of a parameterization of radon projection by the reconstruction on circular disc
Author(s): O. Tischenko; A. Schegerer; Y. Xu; C. Hoeschen
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Paper Abstract

An angular parameterization of parallel Radon projections referred to in this paper as ψ-parameterization is discussed in relevance to the efficiency of reconstruction from fan data. The fact that the ψ-parameterization coincides with the equiangular fan beam parameterization allows us to develop a simple and efficient approach useful for the reconstruction from fan data. Within this approach parallel projections are approximated by groups of semi-parallel rays. The reconstruction is carried out directly, i.e. without any modification of original data, at the speed which is comparable or even higher than that of the parallel Filtered Back Projection (FBP) algorithm.

Paper Details

Date Published: 22 March 2010
PDF: 10 pages
Proc. SPIE 7622, Medical Imaging 2010: Physics of Medical Imaging, 76222F (22 March 2010); doi: 10.1117/12.845252
Show Author Affiliations
O. Tischenko, Helmholtz Zentrum München GmbH (Germany)
A. Schegerer, Helmholtz Zentrum München GmbH (Germany)
Y. Xu, Univ. of Oregon (United States)
C. Hoeschen, Helmholtz Zentrum München GmbH (Germany)

Published in SPIE Proceedings Vol. 7622:
Medical Imaging 2010: Physics of Medical Imaging
Ehsan Samei; Norbert J. Pelc, Editor(s)

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