【摘要】目的：探讨肺结核 “树芽征”CT 影像的特点。方法： 对328例肺结核患者行螺旋CT 检查,对各种类型肺结核“树芽征”的形态、部位进行统计分析。结果：涂阳肺结核和空洞肺结核的树芽征出现率分别为84.8%和91.0% ,结核球的树芽征出现率为22.22%。空洞肺结核树芽征分布:跨叶分布的频率占70.35%，对侧累积率为49.74%。结论：树芽征是肺结核经气道播散的特征影像,在肺结核诊断和鉴别诊断中有较高的价值。

    【关键词 】 肺结核； 诊断；体层摄影术

    The value of Tree-in-Bud Sign on CT in diagnosis and differential diagnosis of pulmonary tuberculosis

    XING Bao-chun, YU Guang-hui, ZHENG Xian-min

    (Department of Phthisiology of First Hospital of Xinxiang Medical College, Weihui 453100,China)

    【Abstract】Objective：To analyze the photographic character of tree- in- bud at pulmonary tuberculosis. Methods:To check 328 pulmonary tuberculosis patients with spiral CT and statistic the formation and location of tree- in- bud at various tuberculosis.Results: The rates of tree in bud sign at smear positive and cavity pulmonary tuberculosis were 84.8% and 91.0% respectively. The rate in tuberculoma was 22.22 %. The occurrence frequency of tree-in-bud in cavity pulmonary tuberculosis that located in down lobe was 70.35%. The occurrence rate of opposite lung was 49. 74%.Conclusions: Tree-in-bud sign is the character photographic of pulmonary tuberculosis, which spread through airway. It shows higher value in diagnosis and differential diagnosis of pulmonary tuberculosis. ......