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Suppressing Multi-Channel Ultra-Low-Field MRI Measurement Noise Using Data Consistency and Image Sparsity

Figure 4

Brain images reconstructed by the regularized SENSE reconstructions with no acceleration (left column).

The data consistency constraint (λ = 0) improves the image by showing a strong signal in the brain parenchyma (middle column). Further, the sparsity prior (λ = 0.1) suppresses the background noise significantly to better delineate the skull and the brain (right column). The pSNR was indicated in each image.

Figure 4

doi: https://doi.org/10.1371/journal.pone.0061652.g004