Newer diagnostic techniques: the superiority of double-contrast roentgenology.
D003108:Colonic Diseases / Q000000981:diagnostic imaging*; D003110:Colonic Neoplasms / Q000000981:diagnostic imaging; D003287:Contrast Media; D004733:Enema; D005769:Gastrointestinal Motility; D049673:History, 20th Century; D006801:Humans; D007413:Intestinal Mucosa / Q000473:pathology; D007417:Intestinal Polyps / Q000000981:diagnostic imaging; D008722:Methods; D009364:Neoplasm Recurrence, Local / Q000000981:diagnostic imaging; D011859:Radiography; D012002:Rectal Diseases / Q000000981:diagnostic imaging*; D012811:Sigmoid Neoplasms / Q000000981:diagnostic imaging; D013679:Technology, Radiologic / Q000266:history; D014481:United States
D003287:Contrast Media