Dependence of image quality on energy spread for a Bragg diffraction based radiography system
- Baldelli P.
- Bacci A.
- Bottigli U.
- Ferrario M.
- Gambaccini M.
- Giulietti D.
- Golosio B.
- Maroli C.
- Oliva P.
- Petrillo V.
- Serafini L.
- Stumbo S.
- Taibi A.
- Tomassini P.
- Vaccarezza C.
Publication date
January 2007
DOI Publisher
Elsevier BV:PO Box 211, 1000 AE Amsterdam Netherlands:011 31 20 4853757, 011 31 20 4853642, 011 31 20 4853641, EMAIL: nlinfo-f@elsevier.nl, INTERNET: http://www.elsevier.nl, Fax: 011 31 20 4853598Abstract
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
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