A Weighted Two-Level Bregman Method with Dictionary Updating for Nonconvex MR Image Reconstruction

Figure 6

Reconstruction comparison on the real brain data. (a) Reference image corresponding to fully sampled reconstruction. (b) Fourier domain sampling pattern. ((c), (d), (e), and (f)) Reconstruction using DLMRI, TBMDU, WTBMDU-L1, and WTBMDU-L2 with at 80% undersampling, respectively. (g) Enlargements of (a), (c), (d), (e), and (f).

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