title: Field control in roentgen therapy with a 5 MeV linear accelerator by means of television.
mesh_terms: D006801:Humans; D007822:Laryngeal Neoplasms / Q000532:radiotherapy; D008722:Methods; D009369:Neoplasms / Q000532:radiotherapy*; D011882:Radiotherapy, High-Energy; D013679:Technology, Radiologic; D013690:Television / Q000706:statistics & numerical data*; D001749:Urinary Bladder Neoplasms / Q000532:radiotherapy