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Figure 3
Tomographic reconstruction by the FDK algorithm. (a) Zoom into the center of a reconstructed horizontal slice. Concentric ring artifacts (top left) are mitigated (bottom right) after applying wavelet-based ring removal (l = 4, σ = 1) to the sinogram. (b) Vertical slice through a volume reconstruction assuming an idealized acquisition trajectory. (c) Shifts of the projection images estimated by registration of opposite projections and reprojection registration (8 × 8 pixel binning, high-pass filter with σ = 5, 100 iterations). (d) Virtual slice through the volume reconstruction after applying the shift correction. The effective voxel size is 17.2 nm.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 32| Part 6| November 2025| Pages 1586-1594
https://doi.org/10.1107/S1600577525008550
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