title: Adjustable field shaping for external-beam radiation therapy.
abstract: A new, simple method for adjustable field shaping for external-beam radiation therapy is described. The system employs shielding blocks attached to specially designed flanges and blocking tray. The system allows a wide latitude of placement of the blocks on the tray. The blocking system is cost-effective and allows rapid setup of treatment fields. It also allows daily blocking adjustment if required and has been shown to produce high-quality reproducible fields in clinical use.
authors.affiliation: Department of Radiology, University of South Alabama College of Medicine, Mobile 36688.
authors.forename: G W
authors.initials: GW
authors.lastname: Cotter
mesh_terms: D006801:Humans; D011835:Radiation Protection / Q000295:instrumentation; D011878:Radiotherapy / Q000295:instrumentation*; D013679:Technology, Radiologic