Abstract #2904
High-resolution free induction decay proton MRSI in the human brain at 9.4 T
Grzegorz L. Chadzynski 1,2 , Anke Henning 2,3 , Philipp Ehses 1,2 , Jens Hoffmann 2 , G. Shajan 2 , and Klaus Scheffler 1,2
1
Biomedical Magnetic Resonance, University
Hospital Tuebingen, Tuebingen, Germany,
2
High-Field
Magnetic Resonance Center, Max Planck Institute for
Biological Cybernetics, Tuebingen, Germany,
3
Institute
for Biomedical Engineering, University and ETH Zuerich,
Zuerich, Switzerland
The FID-MRSI technique is a promising tool to be used
for spectroscopic imaging at ultra-high magnetic field
as it enables short TE and avoids in-plane chemical
shift displacement. However, due to the acquisition
delay, the first points of the acquired FID signals are
missing, giving rise to phase problems which may hamper
quantitative analysis. Our aim was to examine the
feasibility of high-resolution FID-MRSI of the healthy
human brain at the field strength of 9.4 T. The missing
FID points were reconstructed with an autoregressive
model so that the phase problems present in the acquired
spectra could be minimized.
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