Abstract #2515
Numerical RF Pulse Optimization to Reduce Peak B1 for Multi-spectral Imaging around Metal Implants
Andrew M. Huettner 1 , Andrew S. Nencka 1 , L.Tugan Muftuler 2 , and Kevin M. Koch 3
1
Biophysics, The Medical College of
Wisconsin, Milwaukee, Wisconsin, United States,
2
Neurosurgery,
The Medical College of Wisconsin, Milwaukee, Wisconsin,
United States,
3
Biophysics and Radiology, The
Medical College of Wisconsin, Milwaukee, Wisconsin,
United States
This work demonstrates nonlinear constrained numerical
optimization for RF pulse design applied to a pulse
sequence for multi-spectral imaging around metal
implants. By reducing the peak B1 of the refocusing
pulse though numerical optimization, the maximum tip
angle permitted on the scanner, based on hardware and RF
safety limits, was increased from 140 degrees to 180
degrees.
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