Compressed Sensing-Based MRI Reconstruction Using Complex Double-Density Dual-Tree DWT

Table 1

Optimal parameter selections at 0.25 sampling rate for coronal brain data and 0.2 for other data.

Dataset	CS [4]		CS DT-CWT		iCS
	𝜆1	𝜆2	𝜆1	𝜆2	𝜆1	𝜆2
Shepp-Logan	0.0014	0.0024	0.001	0.0026	0.0012	0.0024
Phantom	0.001	0.0016	0.001	0.0018	0.0016	0.0016
Axial brain	0.0014	0.001	0.0012	0.0012	0.0016	0.0008
Coronal brain	0.0014	0.0006	0.0014	0.0012	0.0024	0.001
Coronal brain with noise	0.0014	0.001	0.0012	0.0018	0.0018	0.0012