Abstract #1458
Lowering the B 1 Threshold for BEAR B 1 Mapping
Kalina V Jordanova 1 , Dwight G Nishimura 1 , and Adam B Kerr 1
1
Electrical Engineering, Stanford University,
Stanford, California, United States
We redesign the BEAR B
1
mapping
method to use HSn pulses, which have lower adiabatic
thresholds. By optimizing the HSn pulse parameters, we
can reliably acquire B
1
maps for lower nominal
peak B
1
than
with the original BEAR method. We validate the
performance of BEAR with HSn pulses via simulation and
in vivo at 3T, with average errors from the original
BEAR method of less than 3%. This method will be useful
for reliably acquiring B
1
maps
for lower B
1
values.
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