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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

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

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±
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±
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±
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±
0.06 0.06 0.08 0.02 0.06 0.08 0.02 0.06 0.04
  1. The model here used the initially defined parameters.