TABLE 1.

The average PSNR/dB results of different methods on the ADNI dataset at different noise levels.

Noise level λ	BM3D	NLM	Wiener filter	MRF	WNNM	IRCNN	DnCNN	FFA-DMRI (ours)
5	28.57	31.90	21.59	25.92	33.00	39.09	39.72	39.76
10	25.52	26.68	20.79	23.89	27.08	34.31	34.83	35.23
20	21.05	21.13	18.81	20.28	21.28	29.12	30.24	30.55
30	18.27	18.01	17.03	18.27	17.97	26.40	27.32	27.51

The best results at each noise level are highlighted in bold.