Approximate Sparsity and Nonlocal Total Variation Based Compressive MR Image Reconstruction

Table 2

RMSE results of different methods with different sampling ratios.

Image	Samp. ratio	TVCMRI	RecPF	FCSA	WasNLTV
Chest (220 × 220)	10	38.13	38.04	35.09	19.81
	20	10.90	10.60	9.71	8.67
	30	6.02	5.73	4.94	3.52
	40	3.72	3.58	3.00	2.20
	50	2.22	2.27	1.90	1.22
Artery (220 × 220)	10	43.95	43.81	41.03	14.67
	20	10.19	9.72	3.77	3.35
	30	5.06	4.46	2.18	1.77
	40	3.37	2.88	1.52	1.17
	50	2.17	1.88	1.09	0.64
Cardiac (192 × 192)	10	18.95	18.81	15.86	14.77
	20	8.12	7.89	5.71	4.28
	30	2.85	2.81	2.61	2.24
	40	2.16	2.20	2.15	1.74
	50	1.29	1.57	1.51	1.09
Brain (210 × 210)	10	40.27	40.11	35.87	29.11
	20	16.11	15.71	6.48	5.87
	30	9.48	9.05	3.63	3.14
	40	6.46	6.05	2.73	2.57
	50	3.25	3.07	2.41	2.01