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

Hugo de las Heras; Oleg Tischenko; Helmut Schlattl; Yuan Xu; Christoph Hoeschen

doi:10.1117/12.813646

13 March 2009 Dose reduction potential of the scanning geometry CT D'OR: a simulation study

Hugo de las Heras, Oleg Tischenko, Helmut Schlattl, Yuan Xu, Christoph Hoeschen

Proceedings Volume 7258, Medical Imaging 2009: Physics of Medical Imaging; 72585R (2009) https://doi.org/10.1117/12.813646
Event: SPIE Medical Imaging, 2009, Lake Buena Vista (Orlando Area), Florida, United States

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.

Citation Download Citation

Hugo de las Heras, Oleg Tischenko, Helmut Schlattl, Yuan Xu, and Christoph Hoeschen "Dose reduction potential of the scanning geometry CT D'OR: a simulation study", Proc. SPIE 7258, Medical Imaging 2009: Physics of Medical Imaging, 72585R (13 March 2009); https://doi.org/10.1117/12.813646

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