Abstract #3670
Tracking Motion and Resulting Field Fluctuations Using 19 F NMR Field Probes
Martin Eschelbach 1 , Yu-Chun Chang 1 , Jonas Handwerker 2 , Jens Anders 2 , Anke Henning 1,3 , and Klaus Scheffler 1
1
High-Field Magnetic Resonance Center, Max
Planck Institute for Biological Cybernetics, Tuebingen,
BW, Germany,
2
Institute
of Microelectronics, University of Ulm, Ulm, BW,
Germany,
3
Institute
for Biomedical Engineering, ETH Zrich, Zurich,
Switzerland
In this work,
19
F
NMR field probes are used to track subject head motion
and field fluctuations due to motion and breathing at a
9.4 T human scanner. The field probes are rigidly
attached to the subjects head via a bite bar. A custom
made transmit/receive chain using a PCB and external
signal processing prevents the use of scanner receive
channels. With this setup, position measurements are
possible with a standard deviation of 57 m or smaller
depending on the axis as well as field measurements with
a standard deviation of 3 Hz.
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