TABLE II.

Impact of optimization strategies for parallel MRI recovery of knee images using 1-D sampling. The results correspond to two subjects with a total of 80 slices.

	PSNR		SSIM
	UNET	MoDL	UNET	MoDL
Optimize	4x acceleration
Φ-alone	29.95 ± 3.76	34.21 ± 3.14	0.83 ± 0.13	0.91 ± 0.04
Θ-alone	28.85 ± 3.94	37.66 ± 3.30	0.86 ± 0.04	0.96 ± 0.03
Joint	34.02 ± 3.31	41.28 ± 3.07	0.93 ± 0.04	0.96 ± 0.02
	6x acceleration
Φ-alone	29.24 ± 3.94	32.40 ± 3.00	0.82 ± 0.13	0.89 ± 0.04
Θ-alone	24.45 ± 3.65	33.31 ± 3.17	0.78 ± 0.09	0.93 ± 0.03
Joint	29.62 ± 2.54	35.93 ± 2.74	0.89 ± 0.05	0.93 ± 0.03