Bedu M, Cheminat J C, Maillet J, Perdrizet S, Molina C
Rev Mal Respir. 1985;2(3):139-44.
During the supervision of 93 workers in an asbestos factory pulmonary function tests and radiographs were performed using the same equipment and by the same team, at 5 yearly intervals. The assessment of radiographic changes was judged by following both the reader of the films and the technique used (either un-named films or simultaneous films at 5 yearly intervals). On reading un-named films the appraisal of parenchymal abnormalities was variable from one reader to another; on the other hand they were less marked for simultaneous readings made by the same observer. Progressive pulmonary function tests showed that the fall in vital capacity and of VEMS in 5 year intervals was more rapid when there was a parenchymal abnormality, when the duration of exposure was long or the subject was older when first exposed. The results showed that in spite of ceasing to be exposed the parenchymal abnormalities progressed.
在对一家石棉工厂的93名工人进行监督期间，每隔5年使用相同设备并由同一团队进行肺功能测试和X光检查。通过跟踪读片人员和所使用的技术（未标注影片或每隔5年的同步影片）来判断X光变化的评估结果。在读未标注影片时，不同读片人员对实质异常的评估存在差异；另一方面，同一观察者进行同步读片时差异则较小。渐进性肺功能测试表明，当存在实质异常、接触时间长或首次接触时年龄较大时，肺活量和VEMS每5年的下降速度更快。结果表明，尽管停止接触，实质异常仍在进展。
