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Proceedings Paper

Digital phantoms for the evaluation of a software used for an automatic analysis of the Winston-Lutz test in image guided radiation therapy
Author(s): Tarraf Torfeh; Stéphane Beaumont; David Bonnet; Yves Barbotteau; Jean-Pierre Guédon; Nicolas Normand; Eloïse Denis; Pascal Fenoglietto; Norbert Ailleres
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Paper 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.

Paper Details

Date Published: 18 March 2008
PDF: 11 pages
Proc. SPIE 6913, Medical Imaging 2008: Physics of Medical Imaging, 69133F (18 March 2008); doi: 10.1117/12.768668
Show Author Affiliations
Tarraf Torfeh, IRCCyN/IVC, École Polytechnique de l'Univ. de Nantes (France)
QualiFormeD SARL (France)
Stéphane Beaumont, QualiFormeD SARL (France)
David Bonnet, QualiFormeD SARL (France)
Yves Barbotteau, Ctr. Régional de Lutte Contre le Cancer (France)
Jean-Pierre Guédon, IRCCyN/IVC, École Polytechnique de l'Univ. de Nantes (France)
Nicolas Normand, IRCCyN/IVC, École Polytechnique de l'Univ. de Nantes (France)
Eloïse Denis, IRCCyN/IVC, École Polytechnique de l'Univ. de Nantes (France)
QualiFormeD SARL (France)
Pascal Fenoglietto, Ctr. Régional de Lutte Contre le Cancer (France)
Norbert Ailleres, Ctr. Régional de Lutte Contre le Cancer (France)


Published in SPIE Proceedings Vol. 6913:
Medical Imaging 2008: Physics of Medical Imaging
Jiang Hsieh; Ehsan Samei, Editor(s)

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