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Abstract #4569

Vector concomitant field mapping by phase contrast imaging

Seung-Kyun Lee1 and Afis Ajala1
1GE Global Research, Niskayuna, NY, United States

Synopsis

Keywords: Gradients, Gradients, concomitant fieldWe show that concomitant field-induced phase in phase-contrast imaging allows measurement of the transverse (x,y) components of the magnetic field generated by a gradient coil. Combined with conventional B0 mapping which gives the z-component, the method permits experimental determination of the full three-dimensional vector magnetic field of a gradient coil. We demonstrate the method on a high-performance head gradient (MAGNUS) system and discuss its application to concomitant-field artifact correction based on one-time calibration.

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Keywords