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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