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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 Weissler1,2, David Schug1,2, and Volkmar Schulz1,2,3,4
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


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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