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Abstract #0340

A Comparison of 19F NMR Field Probes and an Optical Camera System for Motion Tracking

Martin Eschelbach1, Alexander Loktyushin1, Paul Chang1,2, Jonas Handwerker3, Jens Anders3, Anke Henning1,4, Axel Thielscher1,5,6, and Klaus Scheffler1,7

1High Field MR Center, Max Planck Institute for biol. Cybernetics, Tuebingen, Germany, 2IMPRS for Cognitive and Systems Neuroscience University of Tuebingen, Tuebingen, Germany, 3Institute of Microelectronics, University of Ulm, Ulm, Germany, 4Institute for Biomedical Engineering, ETH Zürich, Zurich, Switzerland, 5Univ Copenhagen, Hvidovre Hosp, Danish Res Ctr Magnet Resonance, Hvidovre, Denmark, 6Tech Univ Denmark, Biomed Engn Sect, Lyngby, Denmark, 7Department of Biomedical Magnetic Resonance, University Tuebingen, Tuebingen, Germany

The goal of this study is to evaluate and compare motion tracking with two different modalities: NMR field probes and an optical MPT (Moiré Phase Tracking) camera system. This was done by simultaneously measuring the manually induced motion of a spherical phantom with both systems. Our experimental results indicate that the motion patterns measured with both methods are in good agreement. However, the accuracy of the motion estimates from the field probe measurements are of an order of magnitude worse than the camera's tracking results.

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