Table 4.

Intra- and inter-observer variability of myocardial contours assessed by measuring the mean ± SD for the mean, root-mean-square (RMS), and maximum distances between contours from two observations. The n refers to number of contours, which were obtained from 48 study participants.

	Mean Distance (mm)	RMS Distance (mm)	Max. Distance (mm)
Intra-observer
LV Endocardium (n=6362)	0.22 ± 0.42	0.30 ± 0.54	0.63 ± 1.12
LV Epicardium (n=6362)	0.42 ± 0.58	0.53 ± 0.68	1.11 ± 1.29
Inter-observer
LV Endocardium (n=5791)	0.26 ± 0.43	0.34 ± 0.56	0.73 ± 1.15
LV Epicardium (n=5791)	0.72 ± 0.65	0.90 ± 0.76	1.84 ± 1.48