Table 4.

Repeatability of left ventricular myocardium shape features in end-diastole.

Feature name	Robustness	ICC (95% CI)	CV (%)	MRD (%)
Volume	Excellent	0.946 (0.909, 0.968)	7.34	8.6
Minor axis length	Excellent	0.944 (0.905, 0.967)	2.27	2.53
Least axis length	Excellent	0.934 (0.890, 0.961)	2.62	2.7
Maximum 2D diameter (slice)	Excellent	0.913 (0.855, 0.948)	2.88	2.9
Surface area	Excellent	0.909 (0.849, 0.946)	5.23	5.79
Surface area to volume ratio	Good	0.837 (0.735, 0.902)	7.03	7.89
Maximum 2D diameter (column)	Good	0.779 (0.649, 0.866)	4.09	4.76
Compactness 2	Good	0.761 (0.622, 0.854)	15.91	17.81
Compactness	Good	0.757 (0.616, 0.851)	8.06	8.97
Sphericity	Good	0.753 (0.610, 0.848)	5.39	5.99
Maximum 2D diameter (row)	Moderate	0.739 (0.590, 0.839)	4.88	5.23
Spherical disproportion	Moderate	0.724 (0.569, 0.830)	5.39	5.99
Major axis length	Moderate	0.717 (0.559, 0.825)	5.06	5.27
Elongation	Moderate	0.693 (0.525, 0.809)	5.44	5.38
Maximum 3D diameter	Moderate	0.677 (0.503, 0.799)	5.16	5.61
Flatness	Moderate	0.544 (0.327, 0.707)	6.45	6.25

CI, confidence interval; CV, coefficient of variation; ICC, intra-class correlation coefficient; MRD, mean relative difference.