title: Proton beams.
authors.affiliation: Clatterbridge Centre for Oncology, Wirral.
authors.forename: A
authors.initials: A
authors.lastname: Kacperek
authors.forename: J E
authors.initials: JE
authors.lastname: Shaw
mesh_terms: D006801:Humans; D061766:Proton Therapy; D011874:Radiometry / Q000592:standards; D011879:Radiotherapy Dosage / Q000592:standards*; D012015:Reference Standards; D011522:Protons
chemical_list: D011522:Protons