Bertolini M.,Servizio di Fisica Medica Sanitaria |
Nitrosi A.,Servizio di Fisica Medica Sanitaria |
Borasi G.,Servizio di Fisica Medica Sanitaria |
Botti A.,Servizio di Fisica Medica Sanitaria |
And 3 more authors.
Journal of Digital Imaging | Year: 2011
The performance of a commercial digital mammographic system working in 2D planar versus tomosynthesis mode was evaluated in terms of the image signal difference to noise ratio (SDNR). A contrast detail phantom was obtained embedding 1 cm Plexiglas, including 49 holes of different diameter and depth, between two layers containing a breast-simulating material. The phantom was exposed with the details plane perpendicular to the X-ray beam using the manufacturer's standard clinical breast acquisition parameters. SDNR in the digital breast tomosynthesis (DBT) images was higher than that of the full-field digital mammography (FFDM) for 38 out of 49 details in complex background conditions. These differences (p<0.05) are statistically significant for 19 details out of 38. The relative SDNR results for DBT and FFDM images showed a dependence on the diameter of the details considered. This paper proposes an initial framework for a global image quality evaluation for commercial systems that can operate with different image acquisition modality using the same detector. © 2010 Society for Imaging Informatics in Medicine. Source