Abstract #4071

En Route to Body and Cardiac MRI at 21.0 T: Where does the RF power dissipate?

Bilguun Nurzed¹, Dennis Hieronymi¹, Thomas Wilhelm Eigentler¹, and Thoralf Niendorf^1,2,3

¹Max-Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany, ²Experimental and Clinical Research Center (ECRC), a joint cooperation between the Charité Medical Faculty and the Max-Delbrück Center for Molecular Medicine, Berlin, Germany, ³MRI.TOOLS, Berlin, Germany

Synopsis

Keywords: RF Arrays & Systems, Bioeffects & Magnetic FieldsInvestigation of the power correlation matrix at 21.0 T is vital to elucidate the electrodynamics for human body and cardiac MR as well as the RF antenna performance. Recognizing this opportunity, this abstract assesses the power losses for multi-channel RF transceiver arrays for human body and cardiac MR using 32-channel pTx/Rx self-grounded bow-tie building block (SGBT). Losses were determined inside the tissue, lossy material of the antenna, lumped elements of the tuning and matching network and due to coupling and radiation.

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