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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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