目的探讨CT扫描对儿童呼吸道异物诊断的应用价值。方法13例呼吸道异物患者,男8例,女5例,年龄1~5岁,平均2.5岁,全部行CT平扫检查。结果气管内异物4例,右侧主支气管异物5例,左侧主支气管异物4例。伴有阻塞性肺气肿9例,其中伴有阻塞性肺炎5例,纵隔向健侧移位4例。伴有纵隔内气肿2例。结论CT对呼吸道异物的显示率高,定位准确,并对该病的诊断有重要价值。 Objective To explore the value of CT scanning in the diagnosis of foreign body of children. Methods Thirteen patients with foreign body of respiratory tract, including 8 males and 5 females, aged from 1 to 5 years old, with an average of 2.5 years old, were examined by CT plain scan. Results 4 cases of tracheal foreign body, right main bronchial foreign body in 5 cases, left main bronchial foreign body in 4 cases. There were 9 cases of obstructive pulmonary emphysema, including 5 cases of obstructive pneumonia and 4 cases of mediastinal shift to the contralateral side. With mediastinal emphysema in 2 cases. Conclusion CT has a high rate of display of foreign body in the respiratory tract and accurate positioning, and is of great value in the diagnosis of the disease.