7Snganuma N,Murata K,Kusaka Y.Application of the ILO international classification of radiographs of pneumoconiosis to digital chest radiographic images.a NIOSH scientific workshop,washington DC,USA,2008:12-13.
8Takashima Y,Suganuma N,Sakurazawa H,et al.A flat-panel detcctor digital radiography and storage phosphor computed radiography:screening for pneumoconioses.J Occup Health,2007,49:39-45.
9Franzblau A,Kazerooni EA,Sen A,et al.Comparison of digital radiographs with film radiographs for the classification of pneumoconiosis.Acad Radiol,2009,16:669-677.
10Zahringer M,Piekarski C,Saupe M,et al.Comparison of digital selenium radiography with an analog screen-film system in the diagnostic process of pneumoconiosis according to ILO classification.Rofo,2001,173:942-948.