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Abstract #4101

Separation And Quantification Of Head Motion Modes By Pilot Tone Measurements

Peter Speier1, Bacher Mario1, Jan Bollenbeck1, Matthias Fenchel2, and Tobias Kober3

1Siemens Healthcare GmbH, Erlangen, Germany, 2Siemens Medical Solutions, New York, NY, United States, 3Siemens Healthcare GmbH, Lausanne, Switzerland

Pilot Tone Navigation, a new highly integrated electromagnetic navigation method, was applied to characterize head motion in a guided volunteer experiment. Nodding ("yes") and shaking ("no") motion could be separated and quantified by optimizing linear signal combinations from 20 receive channels on fluoroscopically acquired images. These initial results suggest that head motion can be continuously monitored via the regular MRI receive chain without interaction with the acquisition using a single Pilot Tone generator.

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