Requirements for Optimal B 0 Shimming for a Spectroscopy Voxel in the Frontal Cortex at Ultra-High Fields
Ariane Fillmer 1 and Anke Henning 1,2
Institute for Biomedical Engineering, UZH
and ETH Zurich, Zurich, Switzerland,
Planck Institute for Biological Cybernetics, Tuebingen,
The transition of Magnetic Resonance Spectroscopy to
ultra-high fields promises major advantages with respect
to SNR and spectral resolution. In order to gain
meaningful results, excellent B
is of outermost importance. Naturally, the amplitudes of
the shim fields are limited by hardware specifications.
However, an optimal B
compensation might not be possible within these hardware
constraints, especially for regions with large
inhomogeneities, such as the frontal cortex. This work
investigates the hardware requirements for optimal B
compensation and the effect of shim hardware constraints
for a spectroscopy voxel in the frontal cortex.
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