[Improvement of electron beam radiation technic].
D001932:Brain Neoplasms / Q000532:radiotherapy; D003201:Computers; D004583:Electrons; D006801:Humans; D008722:Methods; D010190:Pancreatic Neoplasms / Q000532:radiotherapy; D011882:Radiotherapy, High-Energy; D013120:Spinal Cord Neoplasms / Q000532:radiotherapy; D013679:Technology, Radiologic; D001749:Urinary Bladder Neoplasms / Q000532:radiotherapy