Analysis on comparative imaging diagnosis of transparent foreign body of bronchus in children

[Objective] To discuss the clinical application value of chest fluoroscopy, radiography and MSCT in transparent foreign body of trachea and bronchus in children.[Methods] 63 cases with transparent foreign body of trachea and bronchus were examined using chest fluoroscopy, radiography and MSCT, and their clinical application value were retrospectively analysed comparatively. All cases were confirmed with fiberoptic bronchoscopy. [Result] There are 67 foreign bodies in 63 cases. 66 foreign bodies were found by MSCT(98.5%). Chest fluoroscopy and radiography cannot show the anatomical position of foreign bodies. Combinating with indirect signs, the diagnositic accurate rate of MSCT, chest fluoroscopy and radiography is 100.0%,88.0% and 76.0% respectively. [Conclusion] Chest fluoroscopy is the first choice to screen transparent foreign body of trachea and bronchus in children. It is difficulty to obtain typical chest radiography of inhale and exhale. MSCT should be routine examination before operation, perhaps it should be done directly for the children with clear history of inhaling foreign body.