title: [Image guidance for the evaluation of setup accuracy].
abstract: Information obtained by different methods of image-guided radiotherapy now allows us to reposition the target volume. This evolution causes a change in practice and positioning control. In order to control positioning errors, a systematic control during the first three to five sessions is required. Random repositioning errors and clinical target volume motions can be mastered only by performing a daily imaging. Finally, image-guided radiotherapy allows assessing anatomical changes occurring during treatment, and opens the field of adaptive radiotherapy.
authors.affiliation: Département de radiothérapie, institut Sainte-Catherine, Avignon, France. l.cartier@isc84.org
authors.forename: L
authors.initials: L
authors.lastname: Cartier
authors.forename: M
authors.initials: M
authors.lastname: Alfonsi
authors.forename: N
authors.initials: N
authors.lastname: Pourel
authors.forename: E
authors.initials: E
authors.lastname: Jaegle
authors.forename: B
authors.initials: B
authors.lastname: Chauvet
mesh_terms: D006801:Humans; D009369:Neoplasms / Q000532:radiotherapy; D056888:Patient Positioning; D011880:Radiotherapy Planning, Computer-Assisted; D061106:Radiotherapy Setup Errors / Q000517:prevention & control*; D061089:Radiotherapy, Image-Guided