Surveillance Branch, Division of Respiratory Disease Studies, National Institute for Occupational Safety and Health Centers for Disease Control and Prevention, 1095 Willowdale Road, Mail Stop HG900.2, Morgantown, WV 26505-2888, USA.
Eur Respir J. 2010 Jul;36(1):122-7. doi: 10.1183/09031936.00127609. Epub 2009 Nov 19.
Traditional film-screen radiography (FSR) has been useful in the recognition and evaluation of interstitial lung diseases, but is becoming increasingly obsolete. To evaluate the applicability of storage phosphor digital computed radiography (CR) images in the recognition of small lung opacities, we compared image quality and the profusion of small opacities between FSR and CR radiographs. We screened 1,388 working coal miners during the course of the study with FSR and CR images obtained on the same day from all participants. Each traditional chest film was independently interpreted by two of eight experienced readers using the International Labour Office (ILO) classification of radiographs of pneumoconiosis, as were CR images displayed on medical-grade computer monitors. The prevalence of small opacities (ILO category 1/0 or greater) did not differ between the two imaging modalities (5.2% for FSR and 4.8% for soft copy CR; p>0.50). Inter-reader agreement was also similar between FSR and CR. Significant differences between image modalities were observed in the shape of small opacities, and in the proportion of miners demonstrating high opacity profusion (category 2/1 and above). Our results indicate that, with appropriate attention to image acquisition and soft copy display, CR digital radiography can be equivalent to FSR in the identification of small interstitial lung opacities.
传统的屏片放射摄影（FSR）在识别和评估间质性肺疾病方面非常有用，但已经越来越过时。为了评估存储磷光数字计算机放射摄影（CR）图像在识别小的肺不透明性中的适用性，我们比较了 FSR 和 CR 射线照相的图像质量和小不透明度的丰富度。在这项研究中，我们对 1388 名在职煤矿工人进行了筛选，同一天从所有参与者中获得了 FSR 和 CR 图像。每一张传统的胸部胶片都由八名有经验的读者中的两位独立解释，使用国际劳工组织（ILO）的尘肺射线照相分类，以及在医疗级计算机监视器上显示的 CR 图像。两种成像方式的小不透明度（ILO 类别 1/0 或更高）患病率没有差异（FSR 为 5.2%，软拷贝 CR 为 4.8%；p>0.50）。FSR 和 CR 之间的读者间一致性也相似。在小不透明度的形状以及表现出高不透明度丰富度（类别 2/1 及以上）的矿工比例方面，两种图像模式之间存在显著差异。我们的结果表明，通过适当注意图像采集和软拷贝显示，CR 数字放射摄影可以与 FSR 一样在识别小的间质性肺不透明度方面等效。
