title: Prone double-contrast examination of duodenum for detection of ulcers on anterior wall.
mesh_terms: D000328:Adult; D001466:Barium Sulfate; D004381:Duodenal Ulcer / Q000000981:diagnostic imaging*; D004386:Duodenum / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D008297:Male; D008722:Methods; D008875:Middle Aged; D011187:Posture; D011859:Radiography
chemical_list: D001466:Barium Sulfate