1[4]L.G.Manssion,S.Kheddache,J.Borjession et al."Digital Chest Radiography with a Large Image Intensifier"Europ.J.Radial.9 (1989)P.208-212
2[5]A.Martinez-Davalos,R.D.Speller,D.J.Miller,S.E.Baru et al."Evaluation of a low-dose digital X-ray system with improved spatial resolution" Nuclear Instruments and Methods in Physics Research A 348(1994)241-244
3[6]Wei zhao,Ira Belvis,Stephen Germann et al."Digital radiology using active matrix readout of amorphous selenium:Construction and evaluation of a prototype realtime detector" Med.Phys.24(12) December 1997
4[8]V.R.Groshev,V.R.Kozak,V.I.Nifontov et al."Digital mammography with multi-electrode ionization chamber."Nuclear Instruments and Methods in Physics Research A454(2000) 130-135
5[9]Lawrence N.Rothenberg,Ravinder Nath,Ronald R.Price et.al."The American Association of Physics in Medicen A Perspective on the new millennium" Radology 1998;209:600-603