8Snganuma N, Murata K, Kusaka Y.Application of the ILO intern- ational classification of radiographs of pneumoconiosis to digitalchest radiographic images[J].a NIOSH scientific workshop,washingtonDC, USA,2008,11(4) : 12-13.
9Franzblan A, Kazerooni EA, Sen A, et al.Comparison of pradio- graphswith film radiographs for the classification of pneumoconiosis [J].Acad Radi01,2009,16(2):669-670.
10Franzblau A, Kazerooni EA, Sen A, et al. Comparison of digital radio- graphs with film radiographs for the classification of pneumoconiosis [ J ]. Acad Radiol,2009,16 (6) :669 - 677.