The conventional method to evaluate the resolution of a tomography reconstruction is determined by the Crowther criterion.
The minimum number of views, m {\displaystyle m} , to reconstruct a particle of diameter D {\displaystyle D} to a resolution of d {\displaystyle d} is given by
m = π D d , {\displaystyle m=\pi {\frac {D}{d}},}
where d = 1 / R {\displaystyle d=1/R} , with R {\displaystyle R} the reciprocal space radius corresponding to the maximum meaningfully filled frequency in Fourier space.
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