5Neitzel U, Maack I, Gunther-Kohfahl S. Image quality of a digital chest radiography system based on a selenium detector. Med Phys, 1994,21 (2) :509-516.
6Samei E, Flynn MJ. An experimental comparision of detector performance for direct and indirect digital radiography systems. Med Phys, 2003,30(3) :608-622.
7Chotas HG, Dobbins Ⅲ JT, Ravin CE. Principles of digital radiography with large-area electronically readable detectors: a review of the basics. Radiology, 1999,210(2) :595-599.
8Lucia JMK, Wouter JHV, Bart JAM, et al. Comparison of eight different digital chest radiography systems: variation in detection of simulated chest disease. A JR, 2005,185 (8) : 339-346.
