Abstract #4345
Overproof GRAPPA: Exploiting the natural sparsity of fat images for 64-times accelerated motion navigators (FatNavs)
Daniel Gallichan 1 , Jos P Marques 2 , and Rolf Gruetter 1,3
1
CIBM-AIT, EPFL, Lausanne, VD, Switzerland,
2
Dept.
of Radiology, University of Lausanne, VD, Switzerland,
3
Depts.
of Radiology, Universities of Lausanne and Geneva,
VD/GE, Switzerland
We recently demonstrated that the natural sparsity of
fat images of the human head can be used to achieve
extremely high acceleration factors. Here we demonstrate
that this also allows conventional GRAPPA
reconstructions at 64x acceleration, and use this for a
motion navigator in a high-resolution MP-RAGE structural
scan.
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