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The Dice coefficient on the MedSeg dataset with different 
and 
. The solid lines with hollow points show the results with prior function 
. The purple dash-dotted line is the result from 
with 
. The brown dashed line is the result from the thresholding with -200 HU. The 
values 9.5, 9.0, 8.5, 8.0 correspond to 21, -34, -89, and -144 HUs respectively.
