为探讨年龄因素与工种(接尘、重体力劳动)与胸片改变的关系,我们选择丁某煤矿男工的胸片进行几项指标分析,结果如下: 一、对象:选在我所进行接尘作业体检且资料完整的男工469人的胸片作观察对象,接尘工龄均在五年以上,30—50岁者408名,占总数的87％,20、60及70岁者各约20名,各占4—5％。二、方法:投照为焦点一胶片距2m,后前站立位片,选择符合诊断要求的胸片,排除因胸部疾病而致畸者,采用上海第一医学院和邹仲主编的《胸部X线诊断学》中的测量方法进行了胸廓横径、主动脉横经、心脏横径、心胸比率及主动脉胸部比进行了测定与计算,并用该书的诊断标准对主动脉 In order to explore the relationship between age and type of work (take the dust, heavy manual labor) and changes in the chest, we choose Dingmou male workers chest X-ray analysis of several indicators, the results are as follows: First, the object: Dust operating medical examination and data of 469 male workers were chest X-ray observation, the dust-related length of service are more than five years, 408 were 30-50 years old, accounting for 87% of the total number of 20,60 and 70-year-old about 20, each 4-5%. Second, the method: Projection as the focus of a film from the 2m, before the standing film, select the diagnostic requirements of the chest, remove the cause of chest diseases and teratogenic, using Shanghai First Medical College and Zouzhong editor of the “chest X Line diagnostics ”in the measurement method for the thoracic transverse diameter, aortic transverse, cardiac diameter, cardiothoracic ratio and aortic chest ratio were measured and calculated, and the diagnostic criteria of the book on the aorta