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目的 探讨尘肺诊断标准中小阴影密集度的应用价值。方法 采用职业流行病学的方法 ,参照 1980ILO国际尘肺X线影像分类指南 ,分析比较了太钢耐火厂不同时期接尘工人X线胸片小阴影密集度小级的发生率、发生密度及其与工龄的关系。同时 ,选择了接触煤矽尘工人的X线胸片与之比较其胸片小阴影密集度小级的发展速度和特点。结果 ①不同时期接尘工人胸片小阴影密集度小级的发生率不同 ,统计学检验P <0 0 5。②胸片小阴影密集度随工龄延长而呈现出由低到高的上升趋势。③接触不同性质粉尘的工人其小阴影密集度小级的晋级速度不同。结论 小阴影密集度是观察尘肺发生发展、评价生产环境的质量和估测接触粉尘性质的指标。
Objective To explore the diagnostic value of pneumoconiosis with small shadow density. Methods Using the method of occupational epidemiology, with reference to 1980ILO international guideline for classification of pneumoconiosis, the incidence, occurrence density and occurrence of small shadow density of x-ray chest in workers exposed to dust at different periods in TISCO were analyzed. The length of service. At the same time, chose to contact the coal dust workers x-ray chest compared with its small chest x-ray intensity of small-scale development rate and characteristics. Results ① The incidence of small-scale small chest radiographs of dust-exposed workers in different periods were different, and statistical test P <0 05. ② small chest shadow intensities with the extension of service showed a downward trend from low to high. ③ exposure to different types of workers in the dust of small density of small-scale promotion speed is different. Conclusions Small shadow density is an indicator to observe the occurrence and development of pneumoconiosis, evaluate the quality of production environment and estimate the properties of contact dust.