Evaluation of TrackDOTS potential to perform motion tracking and dynamic shimming

tracking Discrete Off-Resonance markers with Three Spokes (trackDOTS) allows the localization of a large number of markers (12 in the current implementation) with very high temporal resolution (24ms). Additionally, with the same acquisition, the background frequency fluctuations can be monitored. In this work we evaluate the motion tracking accuracy and precision of trackDOTS when using 12 spherical markers filled with acetic acid. Additionally we demonstrate its potential to perform dynamic shimming by showing its sensitivity to respiration induced frequency fluctuations.

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