矽肺是危害工人健康较为严重的一种职业病。在普查工作中,目前国家规定矽肺诊断的主要依据是职业史与X线全胸平片摄影。虽然X线胸片能较全面反映矽肺的病理变化,作为诊断依据比较可靠,但由于X线诊断矽肺的灵敏性有限,尤其是病变程度较轻时,给早期诊断带来一些困难。为此,近 Silicosis is an occupational disease that endangers workers’ health more seriously. In the census work, the current national regulation of silicosis is mainly based on occupational history and X-ray chest radiography. Although X-ray can more fully reflect the pathological changes of silicosis, as a more reliable basis for the diagnosis, but due to the limited sensitivity of the X-ray diagnosis of silicosis, especially when the lesion is relatively mild, to the early diagnosis of some difficulties. For this reason