“树芽征”CT影像在肺结核诊断和鉴别诊断中的价值

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。

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

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.