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目的 :探讨气管、支气管冠状位CT扫描诊断小儿支气管异物敏感性、特异性及临床应用价值。方法 :对 30例支气管异物患儿摄X线胸片及胸透检查 ,同时行气管、支气管冠状位CT扫描 ,其中 18例患儿行CT轴位扫描进行对照。结果 :30例CT冠状位扫描均清晰显示支气管腔内异物及异物周围炎性肉芽肿 ,其中阻塞性肺气肿 2 8例、阻塞性肺炎 5例、阻塞性肺不张 3例。结论 :气管、支气管冠状位CT扫描可以显示小儿支气管异物的直接征像和间接征像 ,其显示异物所在的位置对指导手术有重要意义。
Objective: To investigate the sensitivity, specificity and clinical value of bronchial and bronchial coronal computed tomography in the diagnosis of bronchial foreign bodies in children. Methods: Thirty patients with bronchial foreign bodies were examined by X-ray and chest X-ray. CT and CT scan of trachea and bronchus were performed. Among them, 18 children underwent CT axial scanning. Results: Coronal CT scan of 30 patients clearly showed foreign bodies in the bronchus and inflammatory granuloma around the foreign body, including 28 cases of obstructive pulmonary emphysema, 5 cases of obstructive pneumonia and 3 cases of obstructive pulmonary atelectasis. Conclusion: CT scan of the trachea and bronchus can show the direct and indirect signs of bronchial foreign body in children. It shows that the location of the foreign body is important for guiding the operation.