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

Figure 9

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

(a)

(b)

(c)

(d)

(e)