title: Order of roentgenographic examinations.
mesh_terms: D001466:Barium Sulfate / Q000008:administration & dosage; D004064:Digestive System / Q000000981:diagnostic imaging*; D004733:Enema; D005767:Gastrointestinal Diseases / Q000000981:diagnostic imaging; D006801:Humans; D011859:Radiography
chemical_list: D001466:Barium Sulfate