title: The clean colon.
mesh_terms: D001466:Barium Sulfate; D003106:Colon / Q000000981:diagnostic imaging; D003110:Colonic Neoplasms / Q000000981:diagnostic imaging*; D004733:Enema; D006801:Humans; D011859:Radiography; D007507:Therapeutic Irrigation
chemical_list: D001466:Barium Sulfate