Abstract #1873
Faster B1 Field and SAR Estimation in Parallel Transmit Arrays without Tuning using Voltage Sources
Hongbae Jeong 1 , Konstantinos Papoutsis 1 , Peter Jezzard 1 , and Aaron T. Hess 2
1
FMRIB Centre, University of Oxford, Oxford,
Oxfordshire, United Kingdom,
2
Department
of Cardiovascular Medicine, University of Oxford,
Oxford, Oxfordshire, United Kingdom
In ultra-high-field magnetic resonance imaging, there
are two specific needs for EM simulation: one is the
estimation of transmit and receive magnetic field
distributions and the other is the estimation of
specific absorption rate. In this study, we compare and
evaluate two methods of simulating an eight channel
parallel transmit transceiver coil via generated B1+
fields and SAR distribution in a 7T cylindrical phantom
and human head model. Method 1 is the conventional
tuning method whereby one voltage source is placed on
each element and manually tuned using explicit capacitor
values and Method 2 only uses voltage sources.
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