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Abstract #1204

Characterising the Magnetic Field Inhomogeneity for Open MRI at 0.5T using a Screened Coil NMR Probe Design

Dipendra Jayantilal Mistry1, Penny Gowland1, Olivier Mougin1, Richard Bowtell1, and Paul Glover1
1Sir Peter Mansfield Imaging Centre, School of Physics and Astronomy, University of Nottingham, Nottingham, United Kingdom


Image distortion caused by field inhomogeneity and instability is a major limitation for open MRI systems. Magnetic Field Monitoring (MFM) is a well-documented approach to characterise and thus compensate for these effects using an array of NMR probes. Here a novel NMR probe with a secondary coil is presented, which is designed to protect the pre-amplifier during transmission of a uniform B1 field. Preliminary data has verified this result and temporal variations of the B0 field have been observed. This approach will be developed with multiple probes to measure and compensate for the spatio-temporal response of the system.

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