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Proceedings Paper

Dose reduction potential of the scanning geometry CT D'OR: a simulation study
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Paper Abstract

The sampling geometry of CT-scanners plays an important role in the reconstruction of images. We have previously reported a test-device that directly collects the Radon data within a special scanning geometry, whose acquired data can be efficiently treated with series expansion algorithms such as, for example, OPED (Orthogonal Polynomial Expansion on Disc). This geometry has the potential of reducing the radiation exposure of the patient by about a factor of two. However, a fourth of the data must be obtained by interpolation within the measured projections. In this contribution, we show by a Monte Carlo simulation that this interpolation has no significant influence on the quality of the reconstructions.

Paper Details

Date Published: 13 March 2009
PDF: 9 pages
Proc. SPIE 7258, Medical Imaging 2009: Physics of Medical Imaging, 72585R (13 March 2009); doi: 10.1117/12.813646
Show Author Affiliations
Hugo de las Heras, Helmholtz Zentrum München, GmbH (Germany)
Oleg Tischenko, Helmholtz Zentrum München, GmbH (Germany)
Helmut Schlattl, Helmholtz Zentrum München, GmbH (Germany)
Yuan Xu, Univ. of Oregon (United States)
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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