Abstract #0913
Root-Flipped Multiband Radiofrequency Pulses
Anuj Sharma 1 , Michael Lustig 2 , and William A. Grissom 1
1
Biomedical Engineering, Vanderbilt
University, Nashville, Tennessee, United States,
2
EECS,
University of California, Berkeley, California, United
States
In simultaneous multislice imaging, the peak power of
the multiband pulse increases as square of the number of
slices. This is a major concern for spin echo refocusing
pulses. We present a method to design low peak-power
refocusing and phase-matched excitation pulses for use
in spin echo simultaneous multislice imaging. The pulses
are designed based on the Shinnar Le-Roux algorithm and
the peak power is reduced by finding an optimal root
configuration of the pulse filter. Simulations and
experiments demonstrate that the proposed pulses are of
shorter duration compared to phase-optimized and
time-shifted pulses for the same peak RF power.
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