MR Performance Evaluation of a PET/MR With SiPM Based Time of Flight PET Detectors
Mohammad Mehdi Khalighi 1 , Gaspar Delso 2 , Sri-Harsha Maramraju 3 , Greg Zaharchuk 4 , and Gary Glover 4
Applied Science Lab, GE Healthcare, Menlo
Park, CA, United States,
Science Lab, GE Healthcare, Zurich, Switzerland,
Engineering, GE Healthcare, Waukesha, WI, United States,
Dep., Stanford University, Stanford, CA, United States
The MR performance of an investigational hybrid PET/MR
system is compared to a comparable wide-bore MR machine.
We show that the MR performance is not significantly
compromised after PET ring insertion. It is also shown
that PET acquisition itself has a very small effect (3%
SNR drop). Because of the smaller diameter, the PET/MR
body coil SNR is higher and demonstrates 30% increased
peak B1+. The only significant tradeoff between PET/MR
and a wide-bore MR is the bore size (60cm vs. 70cm).
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