title: Calibration frequency as determined by analysis of machine stability.
abstract: Simple statistical analysis is applied to the evaluation of the output measurements of equipment used in radiotherapy. The calibration frequency is calculated based on the stability of the equipment and the performance parameters required by the quality control criteria.
authors.affiliation: University of Texas, M. D. Anderson Cancer Center, Department of Radiation Physics, Houston 77030.
authors.forename: T E
authors.initials: TE
authors.lastname: Schultheiss
authors.forename: A L
authors.initials: AL
authors.lastname: Boyer
authors.forename: J L
authors.initials: JL
authors.lastname: Horton
authors.forename: R J
authors.initials: RJ
authors.lastname: Gastorf
mesh_terms: D002138:Calibration; D010315:Particle Accelerators; D011786:Quality Control; D011871:Radiology / Q000295:instrumentation*