[MSCT diagnostic value to foreign body and stenosis in trachea and bronchus of children]

To evaluate MSCT diagnostic value in children with foreign body and stenosis in trachea and bronchus.MSCT scan was done in 18 children suspected foreign body and stenosis in trachea and bronchus. Postprocessed (included Minp and MPR) were done after the axial images were obtained. All of 18 cases underwent conventional BFS.Fifteen cases were shown with foreign body through MSCT scan. In addition, total amount of foreign body reached 21 pieces; The CT value in one case was 278 HU, in the others were from--10.6 HU to 31 HU; Stenosis in trachea and bronchus was found in 2 cases; Stenosis in laryngeal cavity after foreign body removing in one case. Foreign body and stenosis in trachea and bronchus were shown better in MPR and Minp images. MSCT images were not only conformed to BFS completely, but also showing foreign body in segmental bronchus more accurately.MSCT scanning could show direct and indirect signs of the foreign body and stenosis in trachea and bronchus accurately, and determine the nature of foreign body. It can act as a primary examination.