Wavelet-space Parallel Imaging for Fast MRI

We developed a novel parallel imaging technique that performs image reconstruction in wavelet space. Since wavelet space is undersampled, aliasing exists in reconstructed images. However, if this aliasing is well controlled, aliasing-free images can be generated from inverse wavelet transform. Compared with conventional image- or k-space reconstruction, wavelet-space reconstruction provides better performance for aliasing suppression and noise control in imaging acceleration.

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