Timothy Gordon Reese1, Bastien Gurin2,
Sanghee Cho2, Se Young Chun2, Jinsong Ouyang2,
Xuping Zhu2, Ciprian Catana3, Georges El Fakhri2
1Athinoula A. Martinos Center for
Biomedical Imaging, Department of Radiology, Massachusetts General Hospital ,
Boston , MA, United States; 2Division of Nuclear Medicine &
Molecular Imaging, Department of Radiology, Massachusetts General Hospital,
Boston, MA, United States; 3Athinoula A. Martinos Center for
Biomedical Imaging, Department of Radiology, Massachusetts General Hospital,
Boston, MA, United States
As
the spatial resolution of PET scanners improves, the deleterious effects of
patient motion become an ever increasing limitation in PET studies. We
present our first results with incorporating clinically relevant motion
information derived from MR into the PET reconstruction process. We describe
our current methods for tracking non-rigid periodic motion over the entire
FOV of the MR-PET scanner, during the PET acquisition. All PET coincidences were reconstructed in
a single frame while correcting the data for motion using MRI, demonstrating
feasibility on an actual MR-PET system and a significant improvement in PET
image quality.
Keywords