Table 1 Estimation of the spatial resolution of sparse tomograms (reconstructed by the MLEM algorithm) by FRC analysis in the function of the measured number of projections.

From: Towards routine 3D characterization of intact mesoscale samples by multi-scale and multimodal scanning X-ray tomography

Number of projections

FRC analysis: Resolution (μm)

Nyquist sampling condition: resolution (μm)

5

20.5

184.7

10

12.9

92.4

20

8.4

46.2

40

5.6

23.1

  1. The spatial resolution defined by the Nyquist sampling condition is included in the 3rd column for comparison.
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