Crowther criterion

The conventional method to evaluate the resolution of an tomography reconstruction is determined by the so-called Crowther criterion.^[1] The minimum number of views, m, to reconstruct a particle of diameter D to a resolution of d (=1/R) is given by

$m = \pi \frac{D}{d}.$

References

1. R. A. Crowther, D. J. DeRosier, A. Klug (1970). "The Reconstruction of a Three-Dimensional Structure from Projections and its Application to Electron Microscopy". Proc. Roc. Soc. Lond. A 317.