Continuous 3rd-order field monitoring: Design and application for single-shot shim characterization

A recently proposed method based on time interleaved acquisition of sets of fast relaxing NMR probes allows for continuous, sequence independent dynamic magnetic field monitoring. As compared to field monitoring relying on single coherence probe acquisitions, this approach removes the limitations in terms of coverable k-space range, acquisition duration and duty cycle. In this work a new 32 channel field camera designed specifically for continuous higher order field monitoring is introduced. The field camera is then used to measure shim impulse response functions within a single-shot of just a few seconds.

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