Validation and Development of a New Automatic Algorithm for Time-Resolved Segmentation of the Left Ventricle in Magnetic Resonance Imaging

Table 3

Image processing error measurements in test set divided into slice sections. Image processing error measurements in the full test set () as dice similarity coefficient (DSC) and point to curve (P2C) between automatic segmentation and manual delineation.

	Dice similarity coefficient (DSC)	Point to curve (P2C)
Endocardium basal	0.88 ± 0.06	2.7 ± 1.0 mm
Endocardium midventricular	0.94 ± 0.02	1.6 ± 0.4 mm
Endocardium apical	0.89 ± 0.03	2.1 ± 0.7 mm
Epicardium basal	0.89 ± 0.05	3.3 ± 1.2 mm
Epicardium midventricular	0.96 ± 0.02	1.3 ± 0.5 mm
Epicardium apical	0.92 ± 0.03	2.2 ± 0.8 mm

Differences are expressed as mean ± SD. For a perfect overlap between the regions DSC should be 1 and P2C should be 0. Basal, midventricular, and apical sections are defined as 1/3 each of the ventricular length in end diastole and end systole separately.