电焊烟尘引起肺部慢性损害的影像学表现具有一定的特征性。对46例电焊作业者行胸部多层螺旋CT扫描后获得的容积数据进行高分辨率重建。结果显示,小叶核影增粗(20例)、磨玻璃结节(19例)、实性结节(14例)是电焊作业者胸部HRCT最常见的征象,结节分布以小叶中心性为主(29例)。13例表现为肺内结节伴小叶核影增粗。肺内结节密集度越低,伴发小叶核影增粗征象的比例越高,不同密集度肺内结节伴小叶核影增粗的比例差异有统计学意义(P=0.000)。不同工龄组肺内结节形态和小叶核影增粗比例的差异均无统计学意义(P=0.39和P=0.818)。电焊烟尘致肺纤维化较弱的特性,使其导致肺部损害的早期发现和早期干预更具有临床意义。由于肺内病变主要体现在肺小叶水平,因此HRCT是疾病早期诊断、随访复查的必要检查手段。 Imaging characteristics of chronic lung injury caused by welding fumes have certain characteristics. The volume data obtained from the multi-slice spiral CT scan of 46 electricians were reconstructed with high resolution. The results showed that lobular and nuclear thickening (20 cases), ground glass nodules (19 cases) and solid nodules (14 cases) were the most common signs of thoracic HRCT in electrician welder. The distribution of nodules was mainly centrilobular (29 cases). 13 cases showed pulmonary nodules with lobular nuclear shadow thickening. The lower the density of pulmonary nodules, the higher the proportion of lesion associated with small leaf nucleus hyperplasia, the higher the ratio of pulmonary nodules with lobular nuclear thickening was (P = 0.000). There was no significant difference in the proportion of pulmonary nodules between the different occupational groups and the ratio of lobular nuclear projection (P = 0.39 and P = 0.818). The weakening of pulmonary fibrosis caused by welding fumes makes it more clinically significant for early detection and early intervention of lung damage. As the lung lesions are mainly reflected in the level of lung lobes, so HRCT early diagnosis of disease, follow-up review of the necessary means of inspection.