Abstract #1129

Lighter is better: A Flexible Lightweight Eight Channel Slot Antenna Array for Cardiac MRI at 7.0 Tesla

Celal Oezerdem¹, Till Huelnhagen¹, Andre Kuehne², Daniel Wenz¹, Jason Millward¹, Lukas Winter¹, and Thoralf Niendorf^1,3,4

¹Berlin Ultrahigh Field Facility (B.U.F.F.), Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany, ²MRI.TOOLS GmbH, Berlin, Germany, ³Experimental and Clinical Research Center (ECRC), a joint cooperation between the Charité Medical Faculty and the Max Delbrück Center for Molecular Medicine in the Helmholtz Assosciation, Berlin, Germany, ⁴DZHK (German Centre for Cardiovascular Research, partner site Berlin, Germany

The wave length in tissue at ultrahigh fields allows for practical realization of RF antenna architectures such as dipole elements, high dielectric resonators and slot antennae. This work presents a novel flexible eight channel slot antenna array customized for cardiac MRI at 7.0 T. The proposed array is lightweight, easy to build, and affords a tight fit for a broad range of upper torso geometries while ensuring good matching and tuning. The in vivo study demonstrated the feasibility of the array for high fidelity, whole heart coverage MRI at 7.0 T and showed rather uniform signal intensity across the heart.

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