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Proceedings Paper

Reduction of aliasing artifacts in tomographic images
Author(s): Oleg Tischenko; Yuan Xu; Thomas Goetzfried; Ludwig Bogner; Christoph Hoeschen
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Paper Abstract

Refining the sampling geometry of a CT scanner is a standard approach used for reduction of aliasing artifacts in CT images. Although this leads to reduction of the artifacts, the principal problem of aliasing streaks artifacts remains unsolved. A different approach is proposed, which in some special cases can solve the problem very efficiently. It is shown that under certain specific conditions, the sum of images reconstructed from the data collected within different sampling geometries is free of aliasing. These conditions are studied and practical situations where they can be realized are discussed.

Paper Details

Date Published: 13 March 2009
PDF: 10 pages
Proc. SPIE 7258, Medical Imaging 2009: Physics of Medical Imaging, 72583F (13 March 2009); doi: 10.1117/12.813825
Show Author Affiliations
Oleg Tischenko, Helmholtz Zentrum München GmbH (Germany)
Yuan Xu, Univ. of Oregon (United States)
Thomas Goetzfried, Univ. of Regensburg (Germany)
Ludwig Bogner, Univ. of Regensburg (Germany)
Christoph Hoeschen, Helmholtz Zentrum München GmbH (Germany)

Published in SPIE Proceedings Vol. 7258:
Medical Imaging 2009: Physics of Medical Imaging
Ehsan Samei; Jiang Hsieh, Editor(s)

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