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目的 研究石棉肺的肺实质和胸膜病变的ＣＴ 检查所见。方法 对１９ 例石棉肺患者进行胸部Ｘ 线和ＣＴ 检查， 比较Ｘ 线和ＣＴ 检查对石棉肺患者肺实质改变和胸膜改变的表现特点和检出结果。结果 Ｘ 线胸片有胸膜改变的５例， 其中１ 例为胸膜斑。ＣＴ 检查发现有胸膜改变的１６ 例， 其中６ 例为胸膜斑； ６ 例有胸膜斑的病例中， 有３ 例为Ｘ 线胸片上难以发现的脊椎旁胸膜斑。肺实质改变， 在Ｘ 线胸片上， 在３ 个病例各发现１ 个大阴影； 而ＣＴ 检查， 在４ 个病例中， 共发现５ 个大阴影， 其中１ 例伴有胸膜下曲线状肺纤维化阴影。肺内小阴影的显示， ＣＴ 检查所见不如Ｘ 线所见的密集。结论 联合应用胸部Ｘ 线和ＣＴ 检查结果， 可为石棉肺的诊断和分级提供较有价值的信息。
Objective To study CT findings of lung aspirate and pleural lesions in asbestosis. Methods Thoracic X - ray and CT were performed in 19 cases of asbestosis patients. The features and findings of X - ray and CT examination in lung aspirates and pleura were compared. Results There were 5 pleural changes in X-ray, of which 1 was pleural plaque. Sixteen cases of pleural changes were found by CT, of which six cases were pleural plaques. Of the six cases with pleural plaques, three were paravertebral pleural plaques that were difficult to detect on X-ray. The parenchymal changes in the chest X-ray showed one large shadow in each of the three cases. In the CT scan, five large shadows were found in four cases, of which one was associated with subpleural curvilinear pulmonary fibrosis shadow. A small shadow in the lungs shows that CT findings are not as intense as X-rays. Conclusion The combined application of chest X-ray and CT examination can provide valuable information for the diagnosis and classification of asbestosis.