. Author manuscript; available in PMC: 2005 Nov 14.

Published in final edited form as: IEEE Trans Med Imaging. 2004 Jul;23(7):903–921. doi: 10.1109/TMI.2004.828354

TABLE II.

Quality Estimates for the Five Prostate Segmentations Generated by One Expert, and Dice Similarity Coefficient (DSC), DSC ≡ (2/A ∩B|/|A| + |B|) With |A| the Area of Region A, Comparing the Expert Segmentation With the True Segmentation Estimate Thresholded With W_i ≥ 0.5. Results Are Shown for Two Different Assumptions of the Prior Probability of Prostate Peripheral Zone and Demonstrate That the Parameter Estimates Obtained Do Not Depend Strongly on the Prior Probability Assumption

Expert segmentations	1	2	3	4	5
f (T_i = 1) = 0.10
$\hat{p}$	0.875090	0.987198	0.921549	0.907344	0.880789
$\hat{q}$	0.999163	0.994918	0.999435	0.999739	0.999446
DSC	0.927660	0.957527	0.954471	0.949058	0.932096
f (T_i = 1) = 0.02
$\hat{p}$	0.878533	0.991261	0.936831	0.918336	0.894861
$\hat{q}$	0.998328	0.993993	0.999320	0.999359	0.999301
DSC	0.913083	0.951027	0.967157	0.954827	0.944756