title: The equivalent field method for dose determinations in rectangular fields.
authors.affiliation: Newcastle General Hospital, Newcastle upon Tyne.
authors.forename: M J
authors.initials: MJ
authors.lastname: Day
authors.forename: E G
authors.initials: EG
authors.lastname: Aird
mesh_terms: D006801:Humans; D008962:Models, Theoretical; D011874:Radiometry / Q000379:methods* / Q000592:standards; D011879:Radiotherapy Dosage / Q000592:standards*; D012015:Reference Standards; D012542:Scattering, Radiation