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