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Abstract #1579

A 28-channel decoupled Tic-Tac-Toe transmit radiofrequency coil for 7T MRI

Tales Santini1, Anthony DeFranco1, Tiago Martins1, Andrea Sajewski1, Howard J. Aizenstein1, and Tamer S. Ibrahim1
1University of Pittsburgh, Pittsburgh, PA, United States

In this work, we investigated the potential of the smaller sizes of the Tic-Tac-Toe transmit coil elements, comparing the newly developed uncoupled configuration with the traditional coupled version of this RF coil design. Simulations with 14 Tic-Tac-Toe panels showed excellent levels of transmit field homogeneity at 7T (coefficient of variation = 12.6%, average = 0.28µT for 1W) while maintaining low levels of SAR (SAR efficiency = 1.41 µT/√(W/Kg)). The simulations were validated with phantom experiments. Future work includes the assembling of the 28-channel transmit coil and the investigation of the optimal power splitting strategy.

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