Table 1:

RMSE/SSIM was computed w.r.t. 5-direction NDI and COSMOS. Moreover, the data consistency and reconstruction times are reported.

	NDI	TKD	L2	FANSI
RMSE w.r.t. 5-dir NDI	0.567	0.680	0.710	0.639
RMSE w.r.t. 5-dir COSMOS	0.599	0.607	0.626	0.568
SSIM w.r.t. 5-dir NDI	0.948	0.921	0.900	0.916
SSIM w.r.t. 5-dir COSMOS	0.940	0.942	0.925	0.941
Data consistency $\Vert D\overrightarrow{\chi }-\overrightarrow{\varphi }{\Vert }_2$	0.505	0.464	0.562	0.563
Reconstruction time [s]	133	0.12	0.14	17