目的 探讨螺旋CT 三维重建技术在儿童呼吸道异物诊断中的应用价值.方法 对可疑儿童呼吸道异物进行螺旋CT扫描及三维重建,结果作为研究组；以气管镜检查结果作为金标准,X线胸片或胸透检查结果作为对照组,通过x2检验比较两组与金标准符合情况.结果 螺旋CT 三维重建可清楚显示病变部位、范围、有无继发感染,其阳性率高于对照组,差异具有统计学意义(P＜0.05).结论 螺旋CT 三维成像技术是诊断儿童呼吸道异物的重要依据.%Objective To evaluate the value of spiral CT three dimensional (3D) reconstructions in the diagnosis of tracheo - bronchial foreign bodies in children. Methods The spiral CT scan and 3D reconstruction images were regarded as the study group,and chest X - ray and fluoroscopy examinations as the control group. The results were compared with the gold standard of traeheoscope examination u-sing the Chi -square test. Results 3D reconstructions of spiral CT could well display the location, range and secondary infection of tracheo - bronchial foreign bodies, which had a high positive proportion and stastistical significance (P < 0. 05 ). Conclusion 3D reconstruction technique of spiral CT is valuable in the diagnosis of tracheobronchial foreign bodies in children.
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