Arcthérapie modulée Technologie RapidArc® : première année d'expérience au CRLC Val-d'Aurelle de MontpellierRapidArc® technology: first year of experience at the Montpellier comprehensive cancer centre

Intensity-modulated radiotherapy (IMRT) has highly impacted on the dose delivery thanks to inverse-planning dosimetry. Conformal isodoses to target volumes and critical organ protection have led to treatment possibilities which were unrealizable with conventional 3D technique. Nevertheless, time delivery using IMRT was in some cases longer than 3D radiotherapy. In order to compensate for this limitation, we have developed since 2007 a volumetric modulated arctherapy (RapidArc®) in partnership with Varian. The technique, the results of the dosimetry plans, and quality control of the 142 first patients treated since November 2008 are presented in this review.