title: A simplified method for imaging the anterior gastroduodenal wall by double-contrast study.
mesh_terms: D003287:Contrast Media / Q000008:administration & dosage*; D004386:Duodenum / Q000000981:diagnostic imaging*; D006801:Humans; D008722:Methods; D011187:Posture; D011859:Radiography; D013270:Stomach / Q000000981:diagnostic imaging*
chemical_list: D003287:Contrast Media