Compressed Sensing method using 4D operators and functions
to treat the entire 4D data as unity can perform high reduction rate of
acceleration and preserve excellent data fidelity. This work demonstrated its
effectiveness on 3D chemical-shift-imaging with reduction rate R=16 or 6.25% sampling
ratio and up to R=32 or 3.125% sampling ratio. The method has been
implemented onto MRI scanner for real-time sparse 3D CSI acquisition. The excellent
data fidelity are demonstrated with 3D CSI images of phantom and in-vivo
hyperpolarized [1-13C]pyruvate and its production metabolites.