Investigating the missing-wedge problem in small-angle X-ray scattering tensor tomography across real and reciprocal space.

ABSTRACT: Small-angle-scattering tensor tomography is a technique for studying anisotropic nanostructures of millimetre-sized samples in a volume-resolved manner. It requires the acquisition of data through repeated tomographic rotations about an axis which is subjected to a series of tilts. The tilt that can be achieved with a typical setup is geometrically constrained, which leads to limits in the set of directions from which the different parts of the reciprocal space map can be probed. Here, we characterize the impact of this limitation on reconstructions in terms of the missing wedge problem of tomography, by treating the problem of tensor tomography as the reconstruction of a three-dimensional field of functions on the unit sphere, represented by a grid of Gaussian radial basis functions. We t

SUBMITTER: Nielsen LC 

PROVIDER: S-EPMC11371061 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature