Fig. 4

Bland–Altman comparison of vessel diameter measurements (in mm) on representative thoracic vessels (ascending aorta, left pulmonary artery, and left superior pulmonary vein) by the first reader (A.I.). Figures show comparisons between non-contrast-enhanced REACT-CMRA, contrast-enhanced steady-state- (A–C), and first-pass-CMRA (D–F), respectively. The middle line depicts the mean bias of the diameter measurements and the dotted lines represent the 95 % limits of agreement (LOA)