title: Evaluation of the clinical usefulness for using verification images during frameless radiosurgery.
abstract: Our previous studies showed that intrafraction motion needs to be corrected for in frameless radiosurgery. This study was designed to evaluate if verification images can correct for mechanical inaccuracy and intrafraction motion. With proper immobilization and verification images on a regular basis during treatment, mechanical (table-) inaccuracies and intrafraction motion can be corrected for and the absence of PTV-margins warranted.
authors.affiliation: Department of Radiotherapy, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Belgium. thierry.gevaert@uzbrussel.be
authors.forename: Thierry
authors.initials: T
authors.lastname: Gevaert
authors.forename: Marlies
authors.initials: M
authors.lastname: Boussaer
authors.forename: Benedikt
authors.initials: B
authors.lastname: Engels
authors.forename: C Fabien
authors.initials: CF
authors.lastname: Litré
authors.forename: Antoine
authors.initials: A
authors.lastname: Prieur
authors.forename: Didier
authors.initials: D
authors.lastname: Wdowczyk
authors.forename: Dirk
authors.initials: D
authors.lastname: Verellen
authors.forename: Guy
authors.initials: G
authors.lastname: Storme
authors.forename: Jean
authors.initials: J
authors.lastname: D'Haens
authors.forename: Philippe
authors.initials: P
authors.lastname: Colin
authors.forename: Mark
authors.initials: M
authors.lastname: De Ridder
mesh_terms: D006801:Humans; D007103:Immobilization; D056888:Patient Positioning; D016634:Radiosurgery / Q000379:methods*; D061106:Radiotherapy Setup Errors
keywords: 6DOF positioning; Frameless radiosurgery; Verification images