Abstract #3851
Highly Accelerated Phase Contrast Imaging using Compressed Sensing and Iterative Reconstruction for High Resolution Short Breathhold Flow Acquisitions
Andreas Greiser 1 , Michael Zenge 1 , Michaela Schmidt 1 , Peter Speier 1 , and Edgar Mueller 1
1
Siemens AG Healthcare Sector, Erlangen,
Bavaria, Germany
We demonstrate the feasibility of using L1 regularized
wavelet based compressed sensing for Cartesian MR flow
imaging (CS Flow) with an acceleration factor of R=7.7
and inline reconstruction and compare it to a standard
breathhold flow protocol with GRAPPA R=2. Temporal
resolution and level of regularization were varied.
Forward volume and peak velocity results had similar
reproducibility and correlated well with the reference
(r
2
>0.97) but were slightly higher
(+4.83%/+7.84%). Stronger regularization improved SNR
but temporal fidelity could be maintained. CS Flow can
provide higher resolution and shorter breathholds and
can easily be integrated in a clinical workflow.
This abstract and the presentation materials are available to members only;
a login is required.
Join Here
