Table 4.

Qualitative visual assessment of automated segmentation

		Agreement (%)	Disagreement (%)
			Auto. better	Man. better	Not sure
Analyst 1	Basal	40.0	26.2	20.6	13.2
	Mid-ventricular	84.8	12.2	2.4	0.6
	Apical	44.0	29.0	22.0	5.0
Analyst 2	Basal	33.0	27.4	17.4	22.2
	Mid-ventricular	91.6	6.6	1.8	0.0
	Apical	80.8	8.8	9.6	0.8

Two experienced image analysts visually compared automated segmentation to manual segmentation for 250 test subjects and assessed whether the two segmentations achieved a good agreement (visually close to each other) or not. If there was a disagreement between the two, the analysts would score in three categories: automated segmentation performs better; manual segmentation performs better; not sure which one is better. The visual assessment was performed for basal, mid-ventricular and apical slices. The percentage of each score catetory is reported