Measuring motion‐induced B0‐fluctuations in the brain using field probes

Fluctuations of the background magnetic field (B0) due to body and breathing motion can lead to significant artifacts in brain imaging at ultrahigh field. Corrections based on real‐time sensing using external field probes show great potential. This study evaluates different aspects of field interpolation from these probes into the brain which is implicit in such methods. Measurements and simulations were performed to quantify how well B0‐fluctuations in the brain due to body and breathing motion are reflected in external field probe measurements.

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