A novel approach to motion tracking has been successfully tested during a EPI scan in a 7T scanner. A set of NMR field probes, placed in between the standard head transmit and receiver coils, was used to measure the extra-cranial field changes due to head movement every 150 ms during quiet periods of the EPI sequence. These measurements were used in conjunction with a regression method to predict head motion parameters. This represents a step forward in integrating a marker-less motion correction technique with standard imaging.
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