title: Tracheography with the experimental contrast agent tantalum.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000402:Airway Obstruction / Q000000981:diagnostic imaging* / Q000209:etiology; D002648:Child; D002675:Child, Preschool; D004106:Dilatation; D005260:Female; D006099:Granuloma / Q000000981:diagnostic imaging; D006801:Humans; D007223:Infant; D007442:Intubation, Intratracheal / Q000009:adverse effects; D008297:Male; D008722:Methods; D008875:Middle Aged; D011859:Radiography; D013635:Tantalum; D014132:Trachea / Q000000981:diagnostic imaging*; D014133:Tracheal Diseases / Q000000981:diagnostic imaging; D014135:Tracheal Stenosis / Q000000981:diagnostic imaging; D014140:Tracheotomy
chemical_list: D013635:Tantalum