Bland-Altman analysis of scan-rescan stability.

Properties are shown for each parametric map, corresponding to the Bland-Altman plots in Fig 4. Mean ± SD of difference between the two scan sessions and the 95% limits of agreement were calculated across all 12 ROIs and 23 volunteers. Linear regression between the mean and difference of the two scan sessions showed an overall r = 0.00 ± 0.07 and P = 0.48 ± 0.27, indicating that a poor linear correlation exists between the mean and the difference. Due to the different datasets used for segmentation, i.e., synthetic T1w and MP2RAGE images, mrQ related results (namely, T1, WF and MTVF maps) are highlighted in grey.