Barium enema.
D000285:Administration, Rectal; D001466:Barium Sulfate / Q000008:administration & dosage; D003108:Colonic Diseases / Q000000981:diagnostic imaging / Q000451:nursing; D003287:Contrast Media / Q000008:administration & dosage; D004733:Enema / Q000379:methods* / Q000451:nursing*; D006801:Humans; D011859:Radiography
D003287:Contrast Media; D001466:Barium Sulfate