Table 5.

Ablation study: the MSFA module, naïve FR module, coarse-to-fine supervision, and the proposed Exponential Weighted Center loss function

	MRE	2mm	2.5mm	3mm	4mm
U-Net	1.38	84.45	90.45	93.57	97.33
FPN	1.19	85.47	92.17	95.54	98.24
MSFA(+)	1.18	85.73	92.31	95.83	98.36
MSFA	1.17	86.17	92.42	95.64	98.38
MSFA+FR*	1.16	86.91	92.63	95.68	98.45
MSFA+FR	1.15	87.43	93.01	95.85	98.45
MSFA+FR+EWC	1.12	88.03	92.73	95.96	98.48

The bold value in each column represents the best result