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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