Abstract #1738

Concentric PET shields and wide-bore 1.5 T MR birdcage for optimal MR and PET signal

Deb Rivera^1,2, Erik R Huijing³, Cezar Alborahal^2,4, Flavio Meliado^3,5, Bart Steensma³, Thomas Dey⁶, Volkmar Schulz⁷, Björn Weißler⁷, E Versteeg³, Hugo de Jong³, Martino Borgo⁸, Michel Italiaander², and Dennis Klomp^2,3

¹Academic Medical Center, Amsterdam (AMC), Amsterdam, Netherlands, ²MR Coils BV, Zaltbommel, Netherlands, ³University Medical Center Utrecht (UMCU), Utrecht, Netherlands, ⁴MR Focus BV, Zaltbommel, Netherlands, ⁵MR Code BV, Zaltbommel, Netherlands, ⁶Rheinisch-Westfaelische Technische Hochschule Aachen, Aachen, Netherlands, ⁷Rheinisch-Westfaelische Technische Hochschule Aachen, Aachen, Germany, ⁸Furtura, Heerhugowaard, Netherlands

Prioritizing signal fidelity for PET and MR, we simulated, built, and tested a wide-bore 1.5T body coil with a concentric ring of novel PET shields. With such an approach, the inherent reduced transmit efficiency can be compensated for by applying more power. Through B1+ measurements in phantoms and in the head, we validate that dual RF power amplifiers meet the power requirements.

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