Attfield M D, Ross D S
Br J Ind Med. 1978 May;35(2):117-22. doi: 10.1136/oem.35.2.117.
Chest radiographs of 661 British electric-arc welders have been examined by three film readers experienced in the radiology of pneumoconiosis. About 7% of the welders showed signs of small rounded opacities of category 0/1 or greater. No definite evidence of large opacities (Progressive Massive Fibrosis) was seen. The prevalence of chest abnormalities other than pneumoconiosis was 7%. A clear association between prevalence of small rounded opacities of category 0/1 or greater and years of exposure to fumes was established, although few signs of severe grades of simple pneumoconiosis were seen.
661名英国电弧焊工的胸部X光片由三位在尘肺病放射诊断方面经验丰富的阅片者进行了检查。约7%的焊工显示出0/1级或更高级别的小圆形阴影迹象。未发现明确的大阴影（进行性大块纤维化）证据。除尘肺病外的胸部异常患病率为7%。尽管很少见到重度单纯性尘肺病的迹象，但已确定0/1级或更高级别的小圆形阴影患病率与烟尘暴露年限之间存在明显关联。
