title: Variable contrast examination of the colon.
mesh_terms: D001466:Barium Sulfate; D002432:Cecum / Q000000981:diagnostic imaging; D003106:Colon / Q000000981:diagnostic imaging*; D003108:Colonic Diseases / Q000000981:diagnostic imaging*; D003110:Colonic Neoplasms / Q000000981:diagnostic imaging*; D006801:Humans; D008722:Methods; D008747:Methylcellulose; D011187:Posture; D011859:Radiography
chemical_list: D001466:Barium Sulfate; D008747:Methylcellulose