From Event: SPIE Optical Engineering + Applications, 2016
X-ray tensor tomography is a promising imaging modality for probing the micro structure of a sample by reconstructing
small-angle scattering densities in different scattering directions. However, the current x-ray grating technique still faces
an obstacle when a divergent x-ray beam from a point x-ray source propagates through a large object and reaches large
planar gratings. In this situation, tensor interior tomography is essential to perform the image reconstruction over a
region of interest (ROI) in the object. Therefore, we propose interior tensor tomography with 2D gratings to extract dark
field images isotropically. Our numerical results demonstrate that the proposed methods are promising for reconstruction
of local images from truncated dark field projection data.
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