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. Author manuscript; available in PMC: 2013 Oct 1.
Published in final edited form as: Magn Reson Med. 2011 Dec 28;68(4):1176–1189. doi: 10.1002/mrm.24116

Figure 4.

Figure 4

Performance comparisons with R = 10.5, 10.5, and 12.4 uniform undersampling, for these three datasets, respectively. For the representative slices from each dataset, the magnitude and difference images of a representative region are shown, along with PSNR, for (a) GRAPPA, (b) GRAPPA with multichannel adaptive local Wiener-filter-based denoising, (c) L1 SPIR-iT, and (d) DESIGN denoising. The PSNR-optimal choices of λ are shown for both L1 SPIR-iT and DESIGN. Note that L1 SPIR-iT is limited here by uniform undersampling.