Daniel J. Holland1, Dmitry M. Malioutov2,
Andrew Blake2, Lynn F. Gladden1, Andrew J. Sederman1
1Department of Chemical Engineering and
Biotechnology, University of Cambridge, Cambridge, Cambridgeshire, United
Kingdom; 2Microsoft Research Cambridge, Cambridge, United Kingdom
This
work describes a method for accelerating the acquisition of phase-encoded
velocity images using compressed sensing.
Results are shown for both experimental and simulated measurements of
liquid and gas flow through a model porous material. Using this approach, acceleration factors
for Cartesian data of between 2 and 5 are achieved with minimal
reconstruction error. By combining
this reconstruction algorithm with a variable density spiral acquisition, a
full order of magnitude decrease in imaging time is achieved. This approach is applicable to MR
angiography and perfusion studies in clinical MRI and to other phase imaging
techniques.
Keywords