Radiothérapie conformationnelle avec modulation d’intensité : analyse des résultats des contrôles précliniques, expérience du centre René-Gauducheau

Abstract: Purpose: Systematic verifications of patient''s specific intensity-modulated radiation treatments are usually performed with absolute and relative measurements. The results constitute a database which allows the identification of potential systematic errors. Material and methods: We analyzed 1270 beams distributed in 232 treatment plans. Step-and-shoot intensity-modulated radiation treatments were performed with a Clinac (6 and 23 MV) and sliding window intensity-modulated radiation treatments with a Novalis (6 MV). Results: The distributions obtained do not show systematic error and all the control meet specified tolerances. Conclusion: These results allow us to reduce controls specific patients for treatments performed under identical conditions (location, optimization and segmentation parameters of treatment planning system, etc.). [Copyright &y& Elsevier]