Figure 6
From: Post-processing sets of tilted CT volumes as a method for metal artifact reduction
Bias is reduced by 94% and noise is reduced by 83%. Bias (left) is reduced from 116 HU on average to 6.6 HU in case of the median of six CTs. Similarly, per-voxel-error (middle) and noise (right) are reduced from 289 HU resp. 197 HU in case of a single CT (on average) to 117 HU resp. 120 HU in case of the mean of six CTs and even to 49 HU resp. 34 HU in case of the median of six CTs.