Figure 9 compares for each single-contrast registration approach <i>m</i>  =  (i), (ii), (iii), the number of voxels that were detected via the FA-VBS but not via TBSS statistical maps (<i>N_m</i>^Diff) to the number of voxels that were susceptible to misregistrations (<i>N_m^F</i>).

<p>The number of voxels susceptible to misregistration was determined by the thresholded F-maps that correspond to the <i>m-</i>th registration approach. The number of voxels that show a mismatch between TBSS and FA-VBS were calculated by Eq. (6). To emphasis the relation between <i>N_m</i>^Diff and <i>N_m^F</i>, the data is depicted in log-scale and a straight line is fitted to the data.