High‐frequency subband compressed sensing MRI using quadruplet sampling

@article{Sung2013HighfrequencySC,
  title={High‐frequency subband compressed sensing MRI using quadruplet sampling},
  author={Kyunghyun Sung and Brian A. Hargreaves},
  journal={Magnetic resonance in medicine},
  year={2013},
  volume={70 5},
  pages={1306-18}
}
PURPOSE To present and validate a new method that formalizes a direct link between k-space and wavelet domains to apply separate undersampling and reconstruction for high- and low-spatial-frequency k-space data. THEORY AND METHODS High- and low-spatial-frequency regions are defined in k-space based on the separation of wavelet subbands, and the conventional compressed sensing problem is transformed into one of localized k-space estimation. To better exploit wavelet-domain sparsity, compressed… CONTINUE READING
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