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Abstract #3957

Generating an EM Simulation Model of a Clinically-Used RF Head Coil at 7T

Dora Özkara1,2, İris Yazıcı1,2, Elnaz Mahmoudi Mahmoudalilou1,2,3, Sascha Brunheim4, Lance DelaBarre3, Tony Stoecker4, Yiğitcan Eryaman1,2,3, and Ergin Atalar1,2,5
1Electrical and Electronics Engineering, Bilkent University, Ankara, Turkey, 2National Magnetic Resonance Research Center (UMRAM), Ankara, Turkey, 3Center for Magnetic Resonance Research University of Minnesota, Twin Cities, MN, United States, 4German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany, 5National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, MD, United States

Synopsis

Keywords: Safety, Simulation/Validation, RF Safety, EM Modeling

Motivation: An electromagnetic (EM) simulation model for the Nova 8Tx32Rx 7T Head Coil is not available for analyzing patient safety in 7T imaging applications.

Goal(s): Our goal is to create an accurate EM model for the Nova 8Tx32Rx 7T Head Coil and estimate the B1+ distributions in phantoms through simulations.

Approach: Our EM model for the coil consists of conductor paths, determined through trial and error. The model is validated with simulation results and experimentally measured B1+ maps.

Results: The model can be used to predict the B1+ maps provided by the vendor (simulated) and the B1+ field experimentally acquired in a 7T system.

Impact: The simulation model developed for the 7T Nova coil showed promising results to estimate fields inside different phantoms. The model could improve research areas involving the Nova coil such as high-permittivity materials, implant safety, RF coils, and pTx pulse design.

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