Table 3:

Five criteria for quantitatively evaluating the segmentation accuracy.

Criteria	Formula
DSC	DSC = 2TP/(2TP+FP+FN)
PPV	PPV = TP/(TP+FP)
IoU	IoU = TP/(TP+FP+FN)
SEN	SEN = TP/(TP+FN)
SPC	SPC = TN/(TN+FP)

Note: TP (true positive) is the number of correctly classified tumor pixels; FN (false negative) is the number of tumor pixels labeled as normal pixels; TN (true negative) is the number of correctly classified normal pixels; FP (false positive) is the number of normal pixels labeled as tumor pixels.