X-ray tensor tomography

Grating-based x-ray phase-contrast imaging provides three different contrast modalities: transmission contrast, differential phase contrast, and dark-field contrast. Dark-field contrast has its origin in small-angle scattering and arises mainly at sample structure sizes below the detector pixel pitch. In this thesis, I present a novel tomographic reconstruction technique called X-Ray Tensor Tomography, which takes the direction dependence of the dark-field signal into account and allows to reconstruct the scattering power and its direction.