title: X-rays in focus: obstruction.
mesh_terms: D000402:Airway Obstruction / Q000000981:diagnostic imaging*; D001017:Aortic Coarctation / Q000000981:diagnostic imaging*; D001157:Arterial Occlusive Diseases / Q000000981:diagnostic imaging*; D001982:Bronchial Diseases / Q000000981:diagnostic imaging; D006801:Humans; D007415:Intestinal Obstruction / Q000000981:diagnostic imaging*; D011859:Radiography