Objective To evaluate the clinical value of MSCT in diagnosing bronchial foreign body in children. Methods 124 patients (89 boys and 35 girls) with airway foreign body confirmed by bronchoscopy were examined with 64-slice spiral CT,CT data were post-processed with multiple planar reconstruction ( MPR) , curved planar reconstruction ( CPR) , volume rendering ( VR) and minimum intensity projection( MinIP). Results The foreign bodies located at trachea and tracheal bifurcation in 6 cases, at right bronchia in 61 cases,at left bronchia in 52 cases,bilateral bronchia in 2 cases,trachea-bronchia in 3 cases. The foreign bodies included nuts in 99 cases,beans in 5 cases,corns in 2 cases,fruits and vegetables in 8 cases,ossicles in 5 cases and other in 5 cases. 6 cases of 14 cases examined with CT again showed foreign body remained. The indirect CT signs included emphysema in 109 cases, atelectasis in 18 cases,pneumonia in 27 cases,bronchiectasis in 12 cases,lung interstitial emphysema in 2 cases, mediastinal displacement in 76 cases,pneumomediastinum in 3 cases,pneumoderma in 2 cases and pneumothorax in 1 case. Conclusion MSCT examination provides a noninvasive and sensitive diagnostic technique in detecting bronchial foreign body.%目的 评价多层螺旋CT在诊断小儿支气管异物方面的临床价值.方法 回顾性总结经支气管镜检查确诊为支气管异物的124例儿童患者资料,男89例,女35例.所有患者均行64排螺旋CT检查,后处理重建采用多平面重建(MPR)、曲面重建(CPR)、最小密度投影(MinIP)、容积再现(VR)等技术.结果 异物位于气管及气管分叉6例,右侧支气管61例,左侧支气管52例,双侧支气管2例,气管-主支气管3例;坚果类异物99例,豆类5例,玉米2例,果蔬类8例,骨块5例,其他5例.6/14例复诊CT提示异物残留患儿再次支气管镜检查均取出异物.间接伴随征象:肺气肿109例、肺不张18例、肺炎27例、支气管扩张12例、肺间质气肿2例、纵隔移位76例、纵隔气肿3例、皮下气肿2例、气胸1例.结论 多层螺旋CT诊断小儿支气管异物无创、准确性较高,有很高的实用价值.
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