Abstract #1378
Accurate EM modelling of a not-fully accessible RF body coil at 3T for quantitative SAR investigations
Antonino Mario Cassara' 1 , Gerd Weidemann 1 , Frank Seifert 1 , and Bernd Ittermann 1
1
Physikalisch-Technische Bundesanstalt (PTB),
Berlin, Germany
Accurate electromagnetic modelling of RF transmit coils
for MRI, e.g. for quantitative SAR assessments, can be
difficult when not all coil details are directly
accessible to the modelers. This is typically the case
for commercial coils and most notably for the body coil
of a clinical scanner. The present work illustrates the
steps for the creation of an accurate model of a
commercial 3 T body coil. Information provided by the
manufacturer is merged with in-situ RF measurements on
accessible ports and results from numerical simulations.
The accuracy of this modeling is quantified comparing
simulated and measured B1+ field maps in a extensive
phantom study.
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