Evaluation of TrackDOTS potential to perform motion tracking and dynamic shimming
Jos P. Marques 1 and Daniel Gallichan 1
CIBM, EPFL, Lausanne, Vaud, Switzerland
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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