B0 map reconstruction via exploiting active shimming information and its application on distortion correction for EPI

B0 map is needed by many MR applications, for instance EPI distortion correction. Field mapping is normally accomplished via evaluating the phase evolution of multi-echo gradient echo measurements, which is acquired separately from routine scans and consume additional time. In this abstract, a novel B0 mapping method is presented, which reconstructs the field map via exploiting the information provided by active shimming. Its application on EPI distortion correction is demonstrated.

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