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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