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.