The data of 379 workers exposed to LRE dust with the series of X-ray chest films were calculated in cumulative dosage of exposure according to dose-response relationship. The relationship between the dosage of exposure and chest film O+ incidence rate was analyzed with life table method. 本文根据剂量-反应关系,对有系列X线胸片的379例轻稀土粉尘作业工人进行了累积接尘量计算,并用寿命表方法分析了接尘量与胸片O~+累计发生率的关系。
Principle and maintenance of the spot film device of DCA-200A X-ray diagnostic table DCA-200A胃肠床点片系统原理及故障分析