Abstract #4086

Dielectric Resonators and Dipole Antennas Combined: New Approach in Radio Frequency Coil Design for Ultrahigh Field MRI

Daniel Wenz¹ and Rolf Gruetter^1,2,3,4

¹Center for Biomedical Imaging - Animal Imaging and Technology (CIBM-AIT), Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland, ²Laboratory of Functional and Metabolic Imaging (LIFMET), Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland, ³Department of Radiology, University of Lausanne, Lausanne, Switzerland, ⁴Department of Radiology, University of Geneva, Geneva, Switzerland

Dielectric resonators (DR) can be advantageous over conventional loop elements, especially in ultrahigh field MRI. We noticed, that it is possible to combine DR in transverse electric mode with dipole antennas (DA), by placing them exactly above each other. In this study we explore the benefits of such combination in a multi-channel array configuration. We present the results of electromagnetic field simulations in which we compared an 8/8-channel DR-DA array with: 8-channel loop array, 8-channel DA array and 8/8-channel loop-DA array.

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