Abstract #3261
Model-free phase processing of multi-gradient-echo images at 9.4T
Gisela E Hagberg 1,2 and Klaus Scheffler 1,2
1
Biomedical Magnetic Resonance, University
Hospital Tuebingen, Tuebingen, Germany, Germany,
2
High
Field Magnetic Resonance, MPI for Biological
Cybernetics, Tuebingen, BW, Germany
The performance of two model-free, high-pass filtering
methods for data cleaning of multi-echo GRE data at 9.4T
was assessed. Along with the widely used Gaussian
kernel, we explored the use of a smoothing spline
function that adapts its shape to the actual k-space
appearance of the MR signal. The spline-based, but not
the Gaussian kernel, mirrored the temporal evolution of
the MR signal with echo time and hereby mitigates strong
Bo inhomogeneities, while desired phase features were
maintained.
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