Fig. 5

Scan-rescan and inter-site comparisons by Bland–Altman plots. Depicted are scan-rescan comparisons for T1- and T2-mapping (Panel A and B, respectively) and site differences. Scan-rescan comparisons were carried out at site I with the volunteers exiting the scanner in between scans for 15 min. Red line indicates the mean difference and the green lines indicate the upper and lower limits of agreement. Inter-site differences are marked by the corresponding symbols (black circle = scan-rescan at site I; blue triangle = site I- site II; orange rectangle = site I-site III; green diamond = site II- site III)