Fig. 17.

The two leftmost columns show one volume, and the two rightmost columns another volume, from an elderly Whitehall subject that moved a lot. The volume on the left was chosen to demonstrate the case where both intra-volume movement effects and movement-induced signal dropout are present. The volume on the right represents a volume with predominantely intra-volume movement effects. The top row shows the original data. The second row shows data after correction for susceptibility, eddy currents and volume-to-volume movement. For the third row data was additionally corrected for outliers. In the final row data was corrected for all of the above, and additionally using the slice-to-volume model with 16 degrees of freedom and a movement regularisation λ of 1. Yellow arrows and rectangles are used to highlight areas of particular interest.