Inter- and Intraobserver Reproducibility
Analysis of data reproducibility was done from reanalyses of 10 patients to assess inter- and intraobserver variability with determination of intraclass correlation coefficient (ICC) and variation coefficient (CV).
As reported in other echo labs, the correlations were considered excellent for longitudinal parameters (strain and SR), twist and torsion, and, in general, satisfactory for the parameters of transverse strain analyses (circumferential and radial). Results are provided in the Supplementary Data II.