Abstract #3073

Evaluation of marker-based head motion tracking for prospective correction in MR and retrospective correction in PET for integrated PET/MR

Samuel Anthony Hurley¹, Matthew G Spangler-Bickell², Timothy Deller³, Timothy W Skloss³, Floris P Jansen³, Tyler J Bradshaw¹, and Alan B McMillan¹

¹Radiology, University of Wisconsin, Madison, WI, United States, ²Nuclear Medicine Unit, IRCCS Ospedale San Raffaele, Milan, Italy, ³GE Healthcare, Waukesha, WI, United States

Motion during PET acquisition will result in blurring, which may reduce the diagnostic value of the images and cause inaccurate quantitation. Motion during an MR exam results in image replicates and ghosting along the phase encoding direction and other effects due to inconstant phase, rendering images non-diagnostic. In this work, we evaluate the ability of an optical motion tracking system to simultaneously enable prospective correction in MR and retrospective correction in PET of rigid body head motion.

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