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Abstract #3233

RF safety assessment of a bilateral 4-channel Tx/Rx 7T breast coil

Thomas M Fiedler 1 , Aaron S Kujawa 1 , Frank Resmer 2 , Patrick Stein 2 , Titus Lanz 2 , Mark E Ladd 1,3 , and Andreas K Bitz 1

1 Medical Physics in Radiology, German Cancer Research Center (DKFZ), Heidelberg, Germany, 2 RAPID Biomedical GmbH, Rimpar, Bavaria, Germany, 3 Erwin L. Hahn Institute for Magnetic Resonance Imaging, University Duisburg-Essen, Essen, Germany

Numerical simulations for a bilateral 4-channel transmit/receive breast coil were performed to investigate the optimum excitation mode of the coil and to determine the maximum permissible input power. An exact model of the breast coil was generated and validated by a comparison of measured and simu-lated B1+ distributions in a phantom. An anatomical heterogeneous body model was used to obtain realistic specific absorption rates (SAR). B1+ shimming was performed to find an excitation mode with optimal B1+ homogeneity.

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