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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 9.

Figure 9

Synthetic 32-channel contrast phantom, with 0.25% and 0.1% complex Gaussian noise added, R = 12.1 uniformly undersampled, and reconstructed using (a) GRAPPA, (b) GRAPPA with multichannel adaptive local Wiener filter-based denoising, (c) L1 SPIR-iT, and (d) DESIGN denoising, with a four-level ‘9-7’ DWT sparsifying transform. The magnitude difference images shown and the PSNR are relative to the original noise-free synthetic image.