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Abstract:
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 B0 shimming is of outermost importance. Naturally, the amplitudes of the shim fields are limited by hardware specifications. However, an optimal B0 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 B0 inhomogeneity compensation and the effect of shim hardware constraints on B0 shimming for a spectroscopy voxel in the frontal cortex.
