Table 7. Ablation study on SCCAF in 2D-TransConver.

Skip connection method	Dice (%) ↑
	Avg	ET	WT	TC
Simple concatenation	82.62	78.52±0.39	85.74±0.30	83.62±0.31
SCCAF	82.87	78.93±0.38	85.94±0.28	83.76±0.31

We report the results of mean ± standard deviation by fixed the training set and run three different seeds. SCCAF, skip connection with cross-attention fusion mechanism. ↑ indicates that the higher the value is, the better the result is. Avg, average; ET, enhancing tumor; WT, whole tumor; TC, tumor core.