Sparse Constrained Reconstruction for Accelerating Parallel Imaging Based on Variable Splitting Method

Table 4

The mean of NMSE of reconstructed image from actual pMRI data (AF = 4).

reconstruction	GEM	CG reconstruction	Sparse constrained reconstruction
NMSE (noise-free data)	0.7641	0.0024	0.0019
NMSE (noisy data)	0.6698	85.2921	0.0049