An advanced local shimming technique can substantially improve magnetic resonance spectroscopic imaging (MRSI) which suffers from the inevitable local B0 inhomogeneities, particularly at ultra-high field. We evaluated the performance on an ultra-high field 7T MRI system of a custom-designed 32-channel head coil that with both RF-receive and DC-shim capability. Each coil loop simultaneously and independently runs AC and DC currents for RF-receive and B0-shimming. We examined the multi-coil shimming performance on five healthy volunteers using MRSI. The combined setup of DC-enabled local shimming and highly-efficient spectroscopic acquisition resulted in a noticeable improvement in the quality of spatial metabolic maps.
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