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Figure 3
Test objects 2 (1.12 mm nylon fiber), 6 (0.40 mm nylon fiber), 9 (0.32 mm simulated micro-calcification) and 16 (0.25 mm-thick tumor-like mass) of the mammographic accreditation phantom (Fig. 2[link]) are shown in conventional absorption, differential phase-contrast and dark-field contrast. Color bars in the images indicate sections where line plots of the contrast signal have been extracted. Absorption I/I0, differential-phase Φ − Φ0 and dark-field signal V/V0 are obtained from a Fourier analysis of the phase-stepping scan as described by Pfeiffer et al. (2009BB19).

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 19| Part 4| May 2012| Pages 525-529
doi:10.1107/S0909049512017682
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