title: Virtual source distances and field geometry independent output factors for 5-14 MeV electron beams from a Siemens Mevatron M7145.
authors.affiliation: Regional Medical Physics Department, South Cleveland Hospital, Middlesbrough, UK.
authors.forename: J H
authors.initials: JH
authors.lastname: Plane
authors.forename: M M
authors.initials: MM
authors.lastname: Trevor
mesh_terms: D004583:Electrons; D011879:Radiotherapy Dosage; D011882:Radiotherapy, High-Energy / Q000295:instrumentation / Q000379:methods*