Requirements for Optimal B 0 Shimming for a Spectroscopy Voxel in the Frontal Cortex at Ultra-High Fields

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 ₀ shimming is of outermost importance. Naturally, the amplitudes of the shim fields are limited by hardware specifications. However, an optimal B ₀ inhomogeneity 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 ₀ inhomogeneity compensation and the effect of shim hardware constraints on B ₀ shimming for a spectroscopy voxel in the frontal cortex.

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