Figure 3
From: Trabecular bone anisotropy imaging with a compact laser-undulator synchrotron x-ray source
Illustration of how the XVR-data is extracted from different dark-field contrast (DFC) images. In (A) the orientation of scattering structures is shown color-coded, the brightness corresponds to the degree of anisotropy. (B) Illustrates an alternative representation using a vector field. Their color emphasizes the direction, the degree of anisotropy is encoded by the length. (C) Depicts the scattering strength versus the sample orientation relative to the grating interferometer for two pixels marked by a red dot and a blue dot in A. From the sinusoidal fit, a0 corresponds to the mean scattering, the phase ϕ corresponds to the angle of maximal scattering and the ratio a1/a0 to the degree of anisotropy.
