title: [An experimental study on the mechanism of gastrointestinal double contrast image formation and its clinical application].
authors.forename: K Z
authors.initials: KZ
authors.lastname: Shang
mesh_terms: D000388:Air; D001466:Barium Sulfate; D004064:Digestive System / Q000000981:diagnostic imaging*; D005767:Gastrointestinal Diseases / Q000000981:diagnostic imaging; D006801:Humans; D011859:Radiography; D013679:Technology, Radiologic
chemical_list: D001466:Barium Sulfate