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Abstract #0549

Non-iterative Parallel Transmission RF Pulse Design with Strict Temperature Constraints

Cem M. Deniz 1,2 , Giuseppe Carluccio 1,2 , Daniel K. Sodickson 1,2 , and Christopher M. Collins 1,2

1 Center for Advanced Imaging Innovation and Research (CAI2R), Department of Radiology, New York University School of Medicine, New York, NY, United States, 2 The Sackler Institute of Graduate Biomedical Sciences, New York University School of Medicine, New York, NY, United States

RF safety in parallel transmission (pTx) is generally ensured by imposing SAR limits during pTx RF pulse design. Several methods have been proposed for incorporating these limits into pulse design using strict constraints or Tikhonov regularizations. Recently, a temperature based iterative RF pulse design method was proposed using temperature simulations at each iteration and updating the SAR constraints accordingly. In this work, a non-iterative parallel transmission RF pulse design is demonstrated using strict temperature constraints that are derived from temperature correlation matrices. Temperature correlation matrices and B 1 + maps were obtained from electrodynamic and thermal simulations of an 8 channel head array with a numerical model of human head.

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