Abstract #1290

MRI compatibility for a novel simultaneous PET/MRI system with scintillator-based RF shielding for preclinical 7 T MRI scanner

Laiyin Yin¹, Nicolas Gross-Weege¹, Teresa Nolte¹, Bjoern Weissler^1,2, David Schug^1,2, and Volkmar Schulz^1,2,3,4

¹Department of Physics of Molecular Imaging Systems, Institute of Experimental Molecular Imaging, RWTH Aachen University, Aachen, Germany, ²Hyperion Hybrid Imaging Systems GmbH, Aachen, Germany, ³Physics Institute III B, RWTH Aachen University, Aachen, Germany, ⁴Fraunhofer Institute for Digital Medicine MEVIS, Aachen, Germany

Synopsis

We present a preclinical PET/MRI system with highly-integrated PET modules in which the RF shielding is implemented on scintillator level for a 7 T Bruker BioSpec 70/20. The PET system's RF housing size is minimized by excluding parts of the scintillator while maintaining the RF shielding properties through the scintillator-integrated shielding. The modules are mounted inside the MRI coil, between resonator and RF screen. MRI compatibility is evaluated in a mouse phantom by means of spurious noise scans and SNR evaluations of standard morphologic sequences, while the PET system is off, idle and measuring. Additionally, postmortem mouse images are presented.

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