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Abstract #4308

64-channel Double-Octagon Tx Head Coil for 7T Imaging

Tales Santini1, Narayanan Krishnamurthy2, Sossena Wood3, Shailesh Raval3, Yujuan Zhao3, Anthony Fischetti3, Minseok Koo3, Howard Aizenstein3, and Tamer Ibrahim3

1University of Pittsburgh, Pittsburgh, PA, United States, Pittsburgh, PA, United States, 2University of Pittsburgh, PA, United States, 3University of Pittsburgh

This work presents the design of a 64-channel double-rowed head coil (16 octagons with 4 Tx channels on each octagon). The magnetic field ( ) and the specific absorption rate (SAR) generated by the new coil were then compared with the TEM and 16-channel Tic Tac coils using Finite-Difference Time Domain (FDTD) simulations. Preliminary data shows significant improvements in all of performance parameters: coefficient of variation (CV) = 14.9% ( field distribution) and maximum/minimum (Max/Min) = 2.45 ( field intensity) across the whole head above and including the cerebellum; and peak/average SAR = 4.97/1.51 W/Kg/10g.

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