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Abstract #4589

16-Channel 11.7T Transmit Array with Integrated Field Probes

Son Chu1, Vincent Gras2, Nicolas Boulant2, and Shajan Gunamony1
1University of Glasgow, Glasgow, United Kingdom, 2University of Paris-Saclay, CEA, CNRS, BAOBAB, NeuroSpin, Gif sur Yvette, France

Synopsis

Keywords: RF Arrays & Systems, RF Arrays & SystemsTransmit arrays are essential to mitigate B1+ inhomogeneity at extremely high static magnetic field strengths. In addition, the transmit elements must be arranged in multiple rows to achieve whole-brain coverage at 11.7T. Furthermore, concurrent field monitoring probes offer the possibility to improve MR image quality by correcting subject-specific k-space trajectories and monitoring real-time dynamic field fluctuations. The placement of these probes must be carefully controlled to achieve proper probe conditioning as well as to preserve the RF performance of the transmit array. This work presents the numerical simulation and optimization of a 16-channel-transmit array with integrated field probes.

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Keywords