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Abstract #3827

Ultra-Wideband Self-Grounded Bow-Tie Antenna Building Block for Thermal Intervention, Diagnostic MRI and MR Thermometry at 7.0 Tesla

Thomas Wilhelm Eigentler1, Lukas Winter2, Haopeng Han1, Eva Oberacker1, Andre Kuehne3, Laura Boehmert1, Hana Dobsicek Trefna4, and Thoralf Niendorf1,3,5

1Berlin Ultrahigh Field Facility, Max-Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany, 2Physikalisch-Technische Bundesanstalt (PTB), Berlin, Germany, 3MRI.TOOLS GmbH, Berlin, Germany, 4Department of Electrical Engineering, Chalmers University of Technology, Gothenburg, Sweden, 5Experimental and Clinical Research Center (ECRC), a joint cooperation between the Charité Medical Faculty and the Max-Delbrück Center for Molecular Medicine, Berlin, Germany

A compact resonator antenna for broadband thermal intervention, diagnostic proton (1H) and fluorine (19F) imaging and MR-Thermometry was developed for operating at 7.0T MRI. The antenna is based on the concept of a self-grounded bow-tie (SGBT) antenna to enable thermal intervention frequencies ranging from 250MHz to 516MHz. The self-grounded bow-tie resonator antenna is smaller and lighter compared to previous dipole-antenna designs, enabling a high-density multi-channel array. The proposed antenna is demonstrated to be suitable for diagnostic imaging, thermal intervention, and MR thermometry.

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