Fig. 4

Equivalence testing between sites I, II and III. Equivalence testing for T1- and T2-mapping for the three sites (I, II and III). Equivalence is shown if the 95-% confidence interval of the difference between sites (shown by the black lines with squares marking upper and lower limit) is within the pre-defined equivalence limits (interval marked by grey square). Equivalence limits derived from Zange et al. [25]