title: Regular processor control improves portal film quality.
authors.affiliation: Radiation Therapy Department, Radiumhemmet, Karolinska Hospital, Stockholm, Sweden.
authors.forename: B
authors.initials: B
authors.lastname: Kihlén
mesh_terms: D006801:Humans; D011786:Quality Control; D011878:Radiotherapy / Q000592:standards*; D014962:X-Ray Film / Q000592:standards*