Fig. 1

Box plots for median native T1, post-contrast T1, extracellular volume fraction (ECV), and T2 mapping in: controls, AAV patients, late gadolinium enhancement (LGE)-negative AAV patients, and LGE-positive AAV patients. The center line in each box represents the median, whereas the lower and upper limits of each box represent the 25 and 75th percentiles, respectively. Except for post-contrast T1 values between LGE-negative AAV patients and controls, all other parameters (native T1, post-contrast T1, ECV, and T2) differed significantly to the values of controls;*: p ≤ 0.05; **: p = ≤0.01, ***: p ≤ 0.001