Abstract #1733

A new dual-mode RF-coil array element for 7T MRI based on dipole antennas

Georgiy Solomakha¹, Stanislav Glybovski², Alexander J.E. Raaijmakers³, Constantin Simovski ⁴, Alexander Popugaev⁵, Irina Melchakova², Pavel Belov², and Redha Abdeddaim⁶

¹Depatment of Nanophotonics and metamaterials, ITMO University, Saint-Petersburg, Russian Federation, ²Nanophotonics and metamaterials, ITMO University, Saint-Petersburg, Russian Federation, ³Department of Radiology, UMC Utrecht, Utrecht, Netherlands, ⁴Electronics and Nanoengineering, Aalto University, School of Electrical Engineering, Helsinki, Finland, ⁵RF and SatCom Systems, Fraunhofer Institute for Integrated Circuits IIS, Erlangen, Germany, ⁶CNRS, Institut Fresnel, Aix-Marseille Universite, Marsel, France

In this work, we demonstrate a new RF-coil for 7 Tesla ultrahigh ﬁeld MRI with two orthogonal channels to achieve better SAR and SNR of images. The ﬁrst phase of the work involves numerical study of diﬀerent multimode structures consisting of coupled electrical dipoles to form a radiofrequency coil that may operate both as a surface loop [1] or a single radiative electrical dipole [2] depending on the driven channel.

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