title: Megavoltage X-ray beams: 2-50 MV.
authors.affiliation: Christie Hospital, Manchester.
authors.forename: T J
authors.initials: TJ
authors.lastname: Jordan
mesh_terms: D004560:Electricity; D006801:Humans; D011874:Radiometry / Q000592:standards; D011879:Radiotherapy Dosage / Q000592:standards*; D011882:Radiotherapy, High-Energy / Q000592:standards*; D012015:Reference Standards; D012542:Scattering, Radiation; D014964:X-Ray Therapy / Q000592:standards*