Table 4.

Comparison of end-expiratory lung volume segmentations of semi-automated methods with MS

Segmentation tool	ICC	N	Absolute difference (ml)	p value*	Relative difference (%)
3D Slicer (semi-automated)	0.995	22	-13.63 ± 29.84	0.067	-1.27
GeoS (semi-automated)	0.992	22	19.40 ± 37.65	0.036	1.81

Difference is mean ± standard deviations. Mean expiratory lung volume obtained with MS was 1073.69 ± 334.14 ml

ICC intraclass correlation coefficient, N number of subjects

*Calculated with Wilcoxon signed-ranks test with Bonferroni-adjusted alpha levels of 0.025 per comparison