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Abstract #1741

MR Compatibility of MADPET4: A Small Animal PET Insert for a 7T MRI System

Geoffrey Topping1, Negar Omidvari1, Jorge Cabello1, Stephan Paul2, Markus Schwaiger1, and Sibylle Ziegler1,3

1Nuclear Medicine, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany, 2Physics, Technical University of Munich, Garching, Germany, 3Nuclear Medicine, University Hospital of LMU Munich, Munich, Germany

The impacts of operating a small animal PET insert in a 7T MRI system were studied. The MRI's performance was compared with and without the insert by measuring the static field, flip angle distribution, RF noise, and several imaging sequences with two RF volume coils. With the insert inside a large 1H volume coil, the MR was limited to T1-weighted anatomical imaging, and required a surface receive coil for adequate SNR. With the insert enclosing a small 1H/13C volume coil, the primary impact on MRI was up to 38% reduced SNR, and all tested MRI sequences were functional.

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