Figure 1
From: Trabecular bone anisotropy imaging with a compact laser-undulator synchrotron x-ray source
Attenuation and x-ray vector radiography (XVR) images of a human index finger. The head of the proximal phalanges, the intermediate phalanges and the base of the distal phalanges are visible. In (A) the integrated attenuation coefficient is shown and (B) depicts the mean scattering strength. (C) Shows the degree of anisotropy as defined in Eq. 1, i.e. the difference of maximum and minimum scattering divided by its sum. The mean values in the colored ROI’s are dablue = 0.07 and dared = 0.25 in the blue ROI and red ROI, respectively. (D) Presents the orientation of scattering structures color-coded according to the color wheel shown in the bottom left. The brightness corresponds to the degree of anisotropy.
