title: A new system of field shaping for external-beam radiation therapy.
mesh_terms: D000497:Alloys; D006801:Humans; D008722:Methods; D009369:Neoplasms / Q000532:radiotherapy; D010969:Plastics; D011835:Radiation Protection; D011867:Radioisotope Teletherapy / Q000295:instrumentation*
chemical_list: D000497:Alloys; D010969:Plastics