Techniques in megavoltage radiotherapy: no. 3, carcinoma of the rectum.
D000230:Adenocarcinoma / Q000532:radiotherapy; D000368:Aged; D002277:Carcinoma / Q000532:radiotherapy*; D006801:Humans; D008297:Male; D008722:Methods; D011187:Posture; D011859:Radiography; D011882:Radiotherapy, High-Energy; D012004:Rectal Neoplasms / Q000000981:diagnostic imaging / Q000532:radiotherapy*; D013679:Technology, Radiologic