Abstract #0340

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

Martin Eschelbach¹, Alexander Loktyushin¹, Paul Chang^1,2, Jonas Handwerker³, Jens Anders³, Anke Henning^1,4, Axel Thielscher^1,5,6, and Klaus Scheffler^1,7

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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