Abstract
We investigated the clinical application of digital mammography systems by evaluating their basic imaging parameters, namely, modulation transfer functions, Wiener spectra, and visual evaluation of contrast-detail phantom images, and by comparing them with those of conventional single-screen/single-film system. Digital systems used in this study were the new (FCR5000MA) and conventional (FCR9000) CR systems and full–field digital mammography (FFDM) system. The new CR system consists of a high-resolution imaging plate with a transparent support and dual-sided reading system. The MTF of FFDM system showed higher than those of new and conventional CR systems, but lower than that of the screen-film system. The FFDM system had a lowest noise level in the digital systems, and new CR system showed lower noise level than that of the conventional CR system. The results of the contrast-detail analyses indicated that the detectability of new CR and FFDM systems comparable to or slightly superior than that of the screen-film system.
