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Abstract #0143

Whole-body 7T 31P birdcage transmit coil driven by a 35kW RF amplifier with an integrated 30-element 31P receive array and an 8-element 1H transmit/receive array

Ladislav Valkovic1,2, Alex Batzakis3, Jane Ellis1, Lucian Purvis1, Albrecht I Schmid1,4, Matthew D Robson1, Dennis WJ Klomp3,5, and Christopher T Rodgers1,6

1Oxford Centre for Clinical MR Research (OCMR), RDM Cardiovascular Medicine, University of Oxford, Oxford, United Kingdom, 2Department of Imaging Methods, Institute of Measurement Science, Slovak Academy of Sceinces, Bratislava, Slovakia, 3MR Coils BV, Zaltbommel, Netherlands, 4High-Field MR Centre, Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, Vienna, Austria, 5Department of Radiology, University Medical Center Utrecht, Utrecht, Netherlands, 6The Wolfson Brain Imaging Centre, University of Cambridge, Cambridge, United Kingdom

We describe our experiences implementing a whole-body transmit coil driven by a 35kW RF power amplifier, with a 30-element 31P receive array, and an 8-element 1H transmit/receive array, optimised for cardiac 31P-MRS at 7T. We describe an adaptation to the vendor’s standard SAR monitoring to monitor RF power levels up to the full 35kW output of the RFPA. This new hardware was found to achieve better 31P B1+ and SNR at the depth of the heart than other coils available in our institution. This setup promises to allow the first regionally-resolved, whole-heart 31P-MRSI studies at 7T in the near future.

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