Abstract #1374
EM and thermal validation of a numerical elliptical birdcage at 3T in the presence of a long conductive wire
Mlina Bouldi 1 and Jan M. Warnking 1,2
1
Grenoble Institut des Neurosciences - UJF,
Grenoble, Rhnes Alpes, France,
2
Inserm
U836, Grenoble, Rhnes Alpes, France
Understanding the risk of overheating in the presence of
implants requires a rigorous simulation of experimental
conditions. We have built a model of the whole body
transmit coil in the Philips Achieva TX system. The
validity of that model was verified by comparing
electromagnetic and thermal simulations to phantom
experiments for an ASTM phantom alone and in presence of
a long copper wire. RF fields are in good agreement.
Local temperature variations show similar dynamics and
amplitudes. Realistic temperature simulations, as
opposed to SAR simulations, provide a metric directly
comparable to experimental results and thus facilitate
validation.
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