Table 1.

Performance comparison between Attention-Reg, MSReg (Guo et al., 2020), and DVNet (Sun et al., 2018). The initial Dice is 0.619±0.17 and the initial SRE uniformly distributes between 0 and 20 mm.

Method	Stage 1	Stage 2	Registered DICE	#Parameters
DVNet (Sun et al., 2018)	4.80±3.14	-	0.794±0.09	5,275,832
MSReg (Guo et al., 2020)	4.79±2.41	4.04±2.30	0.811±0.06	16,106,076
ResNet-50 (He et al., 2016)	4.64±2.49	-	0.799±0.07	46,443,622
Attention-Reg	4.27±2.38	3.67±2.00	0.818±0.06	1,248,905
Ablation Study
Attention-Reg w/o attention module	5.11±2.58		0.782±0.07	1,244,393