*3.2. Reproducibility of cMRI Measurements*

cMRI measurements were repeatedly performed on the same set of images, acquired from all patients in the study group. Regarding LVEF, LAS, LVSI and the assessment of LGE+, the intra- and inter-observer reproducibility were excellent. The inter-observer kappa coefficients of agreement were 0.91 for LVEF, 0.97 for LAS, 0.93 for LVSI and 0.88 for LGE+, while the intra-observer kappa coefficients of agreement were 0.98 for LVEF, 0.98 for LAS, 0.92 for LVSI and 0.90 for LGE+ (Table 2).


**Table 2.** Reproducibility inter and intra-reader agreement of cMRI measurements.

Abbreviations: LAS, left ventricular longitudinal-axis strain; LGE, left ventricular late gadolinium enhancement; LVEF, left ventricular ejection fraction; LVSI, left ventricular sphericity index.
