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. 2015 Nov 6;5:16318. doi: 10.1038/srep16318

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Reconstructed slices of (a) β and (b) δ from a test object made of three wires of different materials. In (c) the mean values calculated in the central region of each wire are compared with the theoretical ones (black). The error bars for the experimental data are equal to ±1 standard deviation, while an error of ±5% is assumed on the theoretical values to account for potential impurities and density variation. Resolution is reduced by approximately a factor of 2 compared to the intrinsic resolution of the system (≈10 μm, equal to a mask aperture), due to the Gaussian filter applied to each projection to reduce noise in the final reconstruction (see text).