title: Off-line verification of the day-to-day three-dimensional table position variation for radiation treatments of the head and neck region using an immobilization mask.
abstract: Variation in the table height position for 175 treatments of 167 patients was calculated as a measure for day-to-day set-up precision in 2063 treatment sessions and resulted in a median standard deviation of 1 mm. The median standard deviations of table longitudinal and lateral position were 3 and 5 mm, respectively.
authors.affiliation: Division of Radiotherapy, University Hospital Gent, Belgium.
authors.forename: L A
authors.initials: LA
authors.lastname: Vakaet
authors.forename: M T
authors.initials: MT
authors.lastname: Bate
authors.forename: L G
authors.initials: LG
authors.lastname: Fortan
authors.forename: C
authors.initials: C
authors.lastname: De Wagter
authors.forename: W J
authors.initials: WJ
authors.lastname: De Neve
mesh_terms: D001932:Brain Neoplasms / Q000532:radiotherapy; D003362:Cost-Benefit Analysis; D005500:Follow-Up Studies; D006258:Head and Neck Neoplasms / Q000532:radiotherapy*; D006801:Humans; D011187:Posture; D011785:Quality Assurance, Health Care / Q000592:standards*; D011879:Radiotherapy Dosage; D011881:Radiotherapy, Computer-Assisted / Q000191:economics / Q000592:standards*; D015203:Reproducibility of Results; D012189:Retrospective Studies; D013679:Technology, Radiologic / Q000295:instrumentation*; D016896:Treatment Outcome