Fast Compressed Sensing MRI Based on Complex Double-Density Dual-Tree Discrete Wavelet Transform

Table 2

Numerical results for a spine MR image using different reconstructed methods employing Gaussian random sampling mask with .

Sampling ratio	Algorithms	SNR (dB)	Rel.Err (%)	SSIM
15%	FISTA-DWT	13.19	11.77	0.7555
	FISTA-CDT	14.35	11.55	0.7955
	FISTA-CDDDT	17.32	8.34	0.8694
18%	FISTA-DWT	16.08	7.48	0.8349
	FISTA-CDT	17.68	7.26	0.8656
	FISTA-CDDDT	19.51	3.57	0.9170
20%	FISTA-DWT	18.28	3.07	0.8937
	FISTA-CDT	20.48	2.43	0.9301
	FISTA-CDDDT	20.78	2.40	0.9435
25%	FISTA-DWT	19.49	2.30	0.9196
	FISTA-CDT	21.78	1.88	0.9520
	FISTA-CDDDT	21.80	1.81	0.9599
28%	FISTA-DWT	19.05	2.21	0.9262
	FISTA-CDT	22.22	1.90	0.9551
	FISTA-CDDDT	22.27	1.76	0.9262