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Abstract #3643

Accuracy and long-term stability measurements of a motion estimation sequence for hybrid PET-MR systems

Gaspar Delso1, Mehdi Khalighi2, Dan Rettmann3, Michel Tohme4, and David Goldhaber4

1GE Healthcare, Zurich, Switzerland, 2GE Healthcare, Stanford, CA, United States, 3GE Healthcare, Rochester, MN, United States, 4GE Healthcare, Waukesha, WI, United States

One of the known potential benefits of integrated positron emission and magnetic resonance (PET/MR) scanners is the possibility of using MR data to monitor patient motion.

The present work evaluates the performance of a new pulse sequence designed exclusively for PET/MR head tracking. By assuming that all the required imaging data is provided by the PET subsystem, the MR sequence can be optimized exclusively for the task of providing accurate motion estimates over long periods of time (e.g. 30-60min). Data management, SAR and noise concerns are therefore minimized.

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