Author/Authors :
Baldelli، نويسنده , , P. and Bacci، نويسنده , , A. and Bottigli، نويسنده , , U. and Ferrario، نويسنده , , M. and Gambaccini، نويسنده , , M. and Giulietti، نويسنده , , D. and Golosio، نويسنده , , B. and Maroli، نويسنده , , C. and Oliva، نويسنده , , P. and Petrillo، نويسنده , , Maria V. and Serafini، نويسنده , , L. and Stumbo، نويسنده , , S. and Taibi، نويسنده , , A. and Tomassini، نويسنده , , P. and Vaccarezza، نويسنده , , C.، نويسنده ,
Abstract :
The aim of this work is to investigate the relationship between contrast and energy resolution of a quasi-monochromatic X-ray system based on Bragg diffraction on a mosaic crystal. Three different energies have been considered: 18, 22 and 26 keV. A commercial phantom containing large and small area details and a digital detector have been used. Results show that for large area details and for a certain value of energy, the energy spread of the incident X-ray beams produces a small reduction of the contrast, while for small area details the high reduction of the contrast is principally due to the spatial resolution properties of the system.
