目的要求一、总结我国二十年来矽肺X线诊断的实践经验,在《1963年标准》的基础上补充新内容,要求原来三期划分基本不变,以免对过去已诊断的病例作重大改变。二、参考ILO国际尘肺X线分类法的优点,为我应用,以方便于今后国际交流。三、力求划期分型不损矽肺病理演变的连 Objectives Requirements 1. To summarize the practical experience of silicosis X-ray diagnosis in the past two decades in our country and to add new contents on the basis of the “1963 Standard”, requiring that the original three phases should be basically the same, so as to avoid major changes to the previously diagnosed cases. Second, refer to the advantages of ILO international pneumoconiosis X-ray classification for my application to facilitate future international exchanges. Third, strive to plan classification does not damage the pathological changes of silicosis even