title: Multileaf collimators, air gap, lateral penumbra, and range compensation in proton radiotherapy.
authors: Bernard
authors: B
authors: Gottschalk
mesh_terms: D000388:Air; D006801:Humans; D061766:Proton Therapy; D011878:Radiotherapy / Q000191:economics / Q000295:instrumentation / Q000379:methods*; D011522:Protons
chemical_list: D011522:Protons