Fig. 7

Measured recovery coefficients as a function of uniformity. The curves of the recovery coefficients correspond to rods with diameters of 5 to 1 mm, from top to bottom. Each different uniformity value corresponds to a different filter width used during reconstruction. A larger filter reduces variance and therefore increases uniformity (i.e., decreasing relative standard deviation). The recovery coefficients are increasing with increasing uniformity values, so overall image quality performance is a trade-off between uniformity and recovery