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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