TABLE V.

Ablation study of designed modules in data augmentation by synthesis is accessed by dice score. Ablation study of designed modules in term of synthesis quality is accessed by pixel accuracy. The reported value is pixel accuracy in the lesion region (i.e. the union of edema, cavity, and tumor) as percent (%). A synthesized pixel was counted correct if the absolute difference was within 16 of the ground truth intensity value.

	Dice Score			Pixel Accuracy
	Edema	Cavity	Tumor	APTw	T1w	FLAIR	T2w	Gd-T1w	Avg.
w/o Stretch-out	0.684	0.695	0.678	62.7	66.3	66.6	70.8	73.1	67.9
w/o Multi-label D	0.758	0.798	0.787	63.6	74.3	73.5	74.6	77.8	72.8
w/o Atlas	0689	0.710	0.705	61.7	66.4	69.6	73.7	74.1	69.1
w/o ${\mathcal{L}}_{\text{SC}}$	0.733	0.794	0.772	63.6	72.0	71.6	76.1	76.5	72.4
w/o ${\mathcal{L}}_{\text{CM}}$	0.789	0.819	0.813	64.0	73.0	73.3	77.5	78.5	73.3
CG-SAMR	0.807	0.840	0.835	64.4	75.4	76.6	81.0	79.6	75.4