矽肺的某些病变结构微细,故 X 线检查的要求较高,一般需有大、中型 X 线诊断机才能取得可用于检出及比较矽肺病变的优质胸片,这使得在基层和边远地区开展矽肺检查发生困难,影响了工人的健康。近年来,稀土元素属增感屏(以下简称稀屏)的出现,使利用低容量 X 线诊断 Some lesions of silicosis fine structure, so the X-ray examination of the higher requirements generally require large, medium-sized X-ray diagnostic machine can be made available to detect and compare the high quality chest x-ray, which makes the grassroots and remote areas to carry out Difficulties in silicosis, affecting the health of workers. In recent years, rare earth elements is sensitive screen (hereinafter referred to as thin screen) appears, so that the use of low-capacity X-ray diagnosis