title: Use of a megavoltage constancy meter for orthovoltage quality assurance.
abstract: A commercial megavoltage constancy meter was tested for routine checks of the x-ray output of an orthovoltage therapy unit. A practical method of using the meter for both output and energy checks was developed and is presented as part of an orthovoltage quality assurance program.
authors.affiliation: Ontario Cancer Institute/Princess Margaret Hospital, Toronto, Canada.
authors.forename: M
authors.initials: M
authors.lastname: Nikolic
authors.forename: J
authors.initials: J
authors.lastname: Van Dyk
mesh_terms: D006801:Humans; D009369:Neoplasms / Q000532:radiotherapy; D011786:Quality Control; D011878:Radiotherapy / Q000295:instrumentation / Q000592:standards*; D011879:Radiotherapy Dosage; D014965:X-Rays