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Abstract #3821

5 Decoupled Sets of Coupled Coils: An 8-20 Channel Subject-Insensitive Array for 7T Applications.

Tamer S. Ibrahim1, Tiejun Zhao2, Eric Jefferies3, Hai Zheng3, Fernando E. Boada4

1Departments of Bioengineering and Radiology, Univeristy of Pittsburgh, Pittsburgh, PA, United States; 2Siemens Medical Solutions; 3Department of Bioengineering, University of Pittsburgh; 4Department of Radiology, University of Pittsburgh

Several major obstacles have dampened the enthusiasm for widespread implementation of parallel transmission methods for ultrahigh field imaging including: 1) the need for accurate B1+ field mapping, 2) coil and subject dependent increases in local/global SAR, and 3) concerns regarding the unclear RF safety assurance of the PTX experiment due to inappropriate electromagnetic models for the estimation of the SAR at ultra-high. The work aims at alleviating these issues through the extension of the 4-port Tic Tac Toe coil to a more elaborate (covers the whole head volume,) 8-20 Tx channel, subject insensitive array for imaging at ultra high fields.