Advances in NMR Probe Technology for Magnetic Field Monitoring
Massner J, De Zanche N, Pruessmann K, Barmet C
University and ETH Zurich
We report recent advances in the design and integration of NMR probes for monitoring the spatiotemporal magnetic field evolution during MR experiments. New choices of sample and matching materials have been essential for improving signal lifetimes and in miniaturizing the NMR samples to prevent dephasing in high-resolution scans. Solid-state matching has critically improved the probe handling and durability. Arbitrary probe configurations are enabled by a modular mounting system. For reliable operation at high field, RF crosstalk has been addressed by refined cabling. The potential of large probe arrays and flexible mounting is illustrated by an example of second-order field monitoring.