Table 3.

Repeatability of right ventricular blood pool shape features in end-diastole.

Feature name	Robustness	ICC (95% CI)	CV (%)	MRD (%)
Minor axis length	Excellent	0.915 (0.858, 0.950)	4.52	4.87
Surface area	Good	0.899 (0.832, 0.940)	7.38	7.57
Volume	Good	0.894 (0.825, 0.937)	11.03	11.52
Least axis length	Good	0.841 (0.741, 0.904)	4.34	4.6
Maximum 2D diameter (slice)	Good	0.837 (0.736, 0.902)	4.36	4.26
Surface area to volume ratio	Good	0.816 (0.704, 0.889)	5.45	5.96
Flatness	Good	0.800 (0.679, 0.878)	5.55	6.04
Maximum 3D diameter	Good	0.795 (0.672, 0.876)	5.33	5.69
Major axis length	Good	0.791 (0.666, 0.873)	4.98	5.02
Maximum 2D diameter (row)	Good	0.790 (0.665, 0.873)	5.91	6.5
Maximum 2D diameter (column)	Good	0.772 (0.638, 0.861)	6.8	7.42
Elongation	Moderate	0.749 (0.604, 0.846)	6.22	6.73
Compactness	Moderate	0.679 (0.506, 0.800)	4.78	5.35
Compactness 2	Moderate	0.679 (0.506, 0.800)	9.52	10.67
Sphericity	Moderate	0.679 (0.505, 0.800)	3.19	3.57
Spherical disproportion	Moderate	0.672 (0.496, 0.795)	3.19	3.57

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