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Abstract #4074

Investigating the impact of head position on the spatial distribution of B1+ field for a 60-ch Tx coil at 7T

Hecheng Jin1, Andrea N Sajewski1, Tales Santini1, Tiago Martins1, Jacob P Berardinelli1, Anthony DeFranco1, Howard J Aizenstein1, and Tamer S Ibrahim1
1University of Pittsburgh, Pittsburgh, PA, United States

Synopsis

Keywords: High-Field MRI, Simulations, Head position, B1+ field, 7T MRIIn this work, we computationally and experimentally evaluated the B1+ field and SAR generated by a 60-channel Tic-Tac-Toc RF coil at 7T MRI scanner on a variety of participants, head models and head positions. On three anatomically detailed human head models, we found slight changes in the intensity and the distribution of B1+ field and SAR over the whole brain when the head was moved out from the top of the coil. This was confirmed in both simulation and experimental B1+ maps. Our results highlighted the impact of imaging setup on imaging quality.

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Keywords