Semi-automated left ventricular segmentation based on a guide point model approach for 3D cine DENSE cardiovascular magnetic resonance

Table 1 Spatial overlap results between contours defined by 2 separate operators (A and B) and the model derived contours at an early systolic time frame

Measure	Operator A vs. model			Operator B vs. model			Operator A vs. B
	Apex	Mid	Base	Apex	Mid	Base	Apex	Mid	Base
Dice coefficient	0.85±	0.87±	0.88±	0.86±	0.89±	0.85±	0.88±	0.88±	0.92±
Dice coefficient	0.06	0.04	0.02	0.02	0.03	0.03	0.04	0.02	0.03
Jaccard coefficient	0.75±	0.77±	0.78±	0.76±	0.80±	0.73±	0.79±	0.78±	0.86±
Jaccard coefficient	0.09	0.06	0.03	0.02	0.04	0.05	0.06	0.04	0.05
False positive	0.09±	0.11±	0.08±	0.06±	0.09±	0.1±	0.16±	0.12±	0.03±
False positive	0.1	0.02	0.07	0.04	0.03	0.08	0.07	0.06	0.04
False negative	0.19±	0.14±	0.16±	0.19±	0.13±	0.19±	0.09±	0.13±	0.11±
False negative	0.06	0.06	0.08	0.02	0.06	0.08	0.02	0.06	0.04

ISSN: 1532-429X