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

Figure 8

Reconstruction comparison of the real brain data. (a) Reference image corresponding to fully sampled reconstruction. (b) Sampling mask in k-space. ((c), (d), and (e)) Reconstruction using DLMRI, TBMDU, and WTBMDU-L2 with at 80% undersampling, respectively. (f) Enlargements of (a), (c), (d), and (e).

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