Development and first use of a novel cylindrical ball bearing phantom for 9-DOF geometric calibrations of flat panel imaging devices used in image-guided ion beam therapy.

Abstract

Image guidance during highly conformal radiotherapy requires accurate geometric calibration of the moving components of the imager. Due to limited manufacturing accuracy and gravity-induced flex, an x-ray imager's deviation from the nominal geometrical definition has to be corrected for. For this purpose a ball bearing phantom applicable for nine degrees of… (More)

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Cite this paper

@article{Zechner2016DevelopmentAF, title={Development and first use of a novel cylindrical ball bearing phantom for 9-DOF geometric calibrations of flat panel imaging devices used in image-guided ion beam therapy.}, author={Axel Zechner and M. Stock and Douglas Kellner and Ingrid Ziegler and Peter Friedrich Keuschnigg and P. Huber and U. Mayer and Ferdinand Sedlmayer and Hannes Deutschmann and Philipp Steininger}, journal={Physics in medicine and biology}, year={2016}, volume={61 22}, pages={N592-N605} }