title: Invited review: the early years of radiotherapy with emphasis on X-ray and radium apparatus.
abstract: Radiotherapy apparatus, both X-ray and radium, is reviewed for the first 4 decades of this century and the developments during this period are outlined, emphasizing the more important growth points. Radiation dose measurement units and radiation protection features of equipment are also included.
authors.forename: R F
authors.initials: RF
authors.lastname: Mould
mesh_terms: D001918:Brachytherapy / Q000266:history; D049673:History, 20th Century; D006801:Humans; D009369:Neoplasms / Q000266:history / Q000532:radiotherapy; D011878:Radiotherapy / Q000266:history* / Q000295:instrumentation; D011883:Radium / Q000266:history* / Q000627:therapeutic use; D014964:X-Ray Therapy / Q000266:history
chemical_list: D011883:Radium