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目的探讨胸部X线透视和MSCT对气管支气管异物的诊断价值。比较两种方法对支气管异物的诊断正确率。方法对32例怀疑支气管异物的病例全部行胸透和MSCT检查(将获得的MSCT轴位扫描图像行多平面重建(MPR)、最小密度投影法(MinP)),检查结果分别与支气管镜对照。结果32例经纤维支气管镜检查均发现异物。胸透直接观察到阳性异物1例,具有典型间接征象的阴性异物16例。MSCT诊断支气管异物31例。结论螺旋CT较普通X线诊断率明显提高,MSCT及图像后处理技术在气管支气管异物诊断中具有重要的临床应用价值。
Objective To investigate the diagnostic value of chest X-ray and MSCT in tracheobronchial foreign bodies. Compare the diagnostic accuracy of the two methods for bronchial foreign body. Methods Thirty-two cases of suspected bronchial foreign bodies were examined by thoracic and MSCT (MPR and MinP). The results were compared with bronchoscopy. Results 32 cases were found by foreign body bronchoscopy. Thoracic directly observed positive foreign body in 1 case, with typical indirect signs of negative foreign body in 16 cases. Diagnosis of bronchial foreign body by MSCT in 31 cases. Conclusion The diagnostic accuracy of spiral CT is higher than that of common X-ray. MSCT and image post-processing techniques have important clinical value in the diagnosis of tracheobronchial foreign bodies.