Berlin 2018 – wissenschaftliches Programm

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KFM: Fachverband Kristalline Festkörper und deren Mikrostruktur

KFM 27: Postersession KFM

KFM 27.20: Poster

Donnerstag, 15. März 2018, 15:00–17:00, Poster E

3D reconstruction from one-dimensionally blurred projections — •Leon Merten Lohse, Malte Vassholz, and Tim Salditt — Institut für Röntgenphysik, Friedrich-Hund-Platz 1, 37077 Göttingen, Deutschland

Although high-brilliance radiation sources become more and more available, many applications are depending on laboratory x-ray sources or neutron sources with low brilliance. Due to the low brilliance, a trade-off between high resolution and feasible acquisition time has to be made. The use of 1D (line) sources has been demonstrated recently, to be able to increase the flux without any impact on the resolution and thus circumvent the trade-off [1,2]. A particularly simple method, which is based on the 3D Radon transform, can be used to reconstruct the 3D volume from a set of projections from a line source. If the divergence of the beam can be neglected, the planar integrals required for the 3D Radon transform can be directly extracted from the projections, and a 3D analogon to the well-known filtered-back-projection algorithm can be formulated.

[1] L. M. Lohse et al. "Tomography with extended sources: ...", Phys. Rev. A (accepted 11/2017) [2] M. Vassholz et al. "New X-Ray Tomography Method ... ", Phys. Rev. Lett. (2016)