Abstract #4055
Proton Resonance Shift based Temperature Mapping with Field Monitoring
David O. Brunner 1 , Simon Gross 1 , Lars Kasper 1 , Bertram J. Wilm 1,2 , Christoph Barmet 1,2 , and Klaas P. Pruessmann 1
1
Institute for Biomedical Engineering,
University and ETH Zurich, Zurich, Switzerland,
2
Skope
Magnetic Resonance Technologies LLC, Zurich, Switzerland
Temperature mapping based on the temperature dependence
of the chemical shift of water protons offers high
sensitivity, however it is also subject to many
confounds. Mainly drifts in the magnetic fields have to
be corrected for in order to achieve high accuracy.
Therefore field monitoring based on an array of 16
temperature stabilized NMR field probes is used to
reconstruct phase based temperature maps for field
drifts up to 3
rd
order
in space. Sub-degree accuracy was achieved even in the
presence of comparably strong dynamic field perturbation
in-vitro in comparison to fluoroptic temperature
reference probes.
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