Digital phantoms for the evaluation of a software used for an automatic analysis of the Winston-Lutz test in image guided radiation therapy

Tarraf Torfeh; Stéphane Beaumont; David Bonnet; Yves Barbotteau; Jean-Pierre Guédon; Nicolas Normand; Eloïse Denis; Pascal Fenoglietto; Norbert Ailleres

doi:10.1117/12.768668

18 March 2008 Digital phantoms for the evaluation of a software used for an automatic analysis of the Winston-Lutz test in image guided radiation therapy

Tarraf Torfeh, Stéphane Beaumont, David Bonnet, Yves Barbotteau, Jean-Pierre Guédon, Nicolas Normand, Eloïse Denis, Pascal Fenoglietto, Norbert Ailleres

Author Affiliations +

Proceedings Volume 6913, Medical Imaging 2008: Physics of Medical Imaging; 69133F (2008) https://doi.org/10.1117/12.768668
Event: Medical Imaging, 2008, San Diego, California, United States

Abstract

Accurate isocentre positioning of the treatment machine is essential for the radiation therapy process, especially in stereotactic radio surgery and in image guided radiation therapy. We present in this paper a new method to evaluate a software which is used to perform an automatic analysis of the Winston-Lutz test used in order to determine position and size of the isocentre. The method consists of developing digital phantoms that simulate mechanical distortions of the treatment machine as well as misalignments of the positioning laser targeting the isocentre. These Digital Test Objects (DTOs) offer a detailed and profound evaluation of the software and allow determining necessary adjustments which lead to high precision and therefore contributes to a better treatment targeting.

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Tarraf Torfeh, Stéphane Beaumont, David Bonnet, Yves Barbotteau, Jean-Pierre Guédon, Nicolas Normand, Eloïse Denis, Pascal Fenoglietto, and Norbert Ailleres "Digital phantoms for the evaluation of a software used for an automatic analysis of the Winston-Lutz test in image guided radiation therapy", Proc. SPIE 6913, Medical Imaging 2008: Physics of Medical Imaging, 69133F (18 March 2008); https://doi.org/10.1117/12.768668

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