[Direct-view irradiation].
D001932:Brain Neoplasms / Q000532:radiotherapy; D004583:Electrons; D006801:Humans; D008722:Methods; D009369:Neoplasms / Q000532:radiotherapy*; D013160:Splenic Neoplasms / Q000532:radiotherapy; D001749:Urinary Bladder Neoplasms / Q000532:radiotherapy