Table 2.

The comparison of different method in lung nodule segmentation.

Evaluation	Without pre-processing	With pre-processing (mono input positive)	With pre-processing (mono input negative)
Dice coefficient	0.573	0.790	0.701
Confusion matrix	Accuracy:0.9986	Accuracy:0.9997	Accuracy:0.9997
	Sensitivity:0.9033	Sensitivity:0.9614	Sensitivity:0.9724
	Specificity:0.9987	Specificity:0.9998	Specificity:0.9997

Evaluation	With pre-processing (hybrid positive output)	With pre-processing (hybrid negative output)
Dice coefficient	0.744	0.639
Confusion matrix	Accuracy:0.9996	Accuracy:0.9994
	Sensitivity:0.9502	Sensitivity:0.9650
	Specificity:0.9996	Specificity:0.9994