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Abstract #4403

Towards Homogeneous 7T Neuro Imaging: Findings and Comparisons between 7T TTT and NOVA RF Coil Systems

Tamer S Ibrahim1,2, Tales Santini1, Shailesh Raval1, Narayanan Krishnamurthy1, Sossena Wood3, Jung-Hwan Kim1, Yujuan Zhao1, Xiaoping S Wu4, Essa S Yacoub4, Howard S Aizenstein5, and Tiejun Zhao6

1Bioengineering, University of Pittsburgh, Pittsburgh, PA, United States, 2Radiology, University of Pittsburgh, Pittsburgh, PA, United States, 3Bioengineering, University of Pittsburgh, Cranberry Twp, PA, United States, 4Radiology, University of Minnesota, Minneapolis, MN, United States, 5Psychiatry, University of Pittsburgh, Pittsburgh, PA, United States, 6Siemens Medical Solutions, United States

Several major obstacles still face neuro UHF imaging including scanning and preparation time for every subject (for TX arrays) and RF intensity limitations due to increased local/global power deposition. The solutions provided and compared in this work represent non-subject specific configurations (combined mode NOVA coil system, PTX NOVA coil system operating in quadrature, and combined mode 16Tx/32Rx Tic-Tac-Toe coil system) and subject specific configurations (PTX NOVA coil system RF-shimmed for each subject). Experimental results shows significant drop in the B1+ field intensity in the left temporal lobe and cerebellum in the NOVA coil systems, issue alleviated with the Tic-Tac-Toe design.

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