Abstract #2060
Matched-filter acquisition of high-resolution single-shot spirals
Lars Kasper 1,2 , Maximilian Haeberlin 1 , Saskia Bollmann 1 , S. Johanna Vannesjo 1 , Bertram J. Wilm 1 , Benjamin E. Dietrich 1 , Simon Gross 1 , Klaas E. Stephan 2 , and Klaas P. Pruessmann 1
1
Institute for Biomedical Engineering,
University of Zurich and ETH Zurich, Zurich,
Switzerland,
2
Translational
Neuromodeling Unit, Institute for Biomedical
Engineering, University of Zurich and ETH Zurich,
Zurich, Switzerland
High-resolution single-shot variable density spirals
with acquisition densities matched to a Gaussian
smoothing kernel are presented. Concurrent field
monitoring and advanced image reconstruction (iterative
SENSE and static B0-correction) proved to be
instrumental to arrive at a high image quality.
Matched-filter spirals increased tSNR of time series
after fMRI-typical post-processing compared to
Archimedean spirals and in summary, realize the best
match to Gaussian smoothing kernel to date.
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