Table 3.

Structural Similarity (SSIM) for three different imaging modes (T1 and PD) at different levels of noise for different methods

Methods/Noise (dB,%)	(15, 3)	(12, 6)	(10, 10)	(6, 15)	(3, 20)	(1 ,25)	(15, 3)	(12, 6)	(10, 10)	(6, 15)	(3, 20)	(1 ,25)
	T1-Weighted						PD-Weighted
Noisy	0.704	0.361	0.216	0.144	0.106	0.084	0.671	0.349	0.208	0.155	0.115	0.090
ONLM	0.966	0.941	0.899	0.847	0.796	0.704	0.958	0.921	0.890	0.841	0.773	0.681
AONLM	0.921	0.657	0.449	0.336	0.268	0.201	0.904	0.638	0.622	0.537	0.457	0.408
PRINLM	0.963	0.936	0.801	0.863	0.803	0.670	0.953	0.918	0.891	0.854	0.846	0.829
MRNLM	0.966	0.942	0.889	0.866	0.818	0.715	0.959	0.921	0.896	0.857	0.800	0.713
DnCNN	0.806	0.746	0.673	0.614	0.564	0.516	0.770	0.611	0.528	0.493	0.451	0.417
DIP	0.965	0.777	0.526	0.456	0.356	0.280	0.955	0.762	0.573	0.564	0.468	0.418
RED-WGAN	0.958	0.927	0.873	0.805	0.721	0.665	0.945	0.916	0.890	0.851	0.810	0.742
GenMRIDenoiser	0.986	0.946	0.897	0.878	0.832	0.742	0.988	0.935	0.901	0.875	0.860	0.831