title: Controlled roentgen examination of the small bowel.
mesh_terms: D001466:Barium Sulfate; D003106:Colon / Q000000981:diagnostic imaging; D006801:Humans; D007421:Intestine, Small / Q000000981:diagnostic imaging*; D008722:Methods; D011187:Posture; D011292:Premedication; D011859:Radiography
chemical_list: D001466:Barium Sulfate