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Abstract #1403

Smart Metamaterials for 3T MRI

Dennis Philipp1, Endri Stoja2, Simon Konstandin1, Robin Wilke1, Diego Betancourt2, Thomas Bertuch2, Juergen Jenne1,3, Reiner Umathum1,3, and Matthias Guenther1,4
1Fraunhofer MEVIS, Bremen, Germany, 2Fraunhofer FHR, Wachtberg, Germany, 3German Cancer Research Center DKFZ, Heidelberg, Germany, 4MR Imaging and Spectroscopy, Faculty 01, University of Bremen, Bremen, Germany

Smart metasurfaces, special two-dimensional metamaterial devices, have a huge potential to drastically improve imaging efficiency in MRI and are a promising tool to overcome some of the limitations which are hampering technological advances in the field. The design, simulation, and experimental verification of thin, smart, non-linear metasurfaces is presented, which yield an up to eightfold enhanced signal-to-noise ratio in 3T MRI. The smart metasurface is a system of two inductively coupled structures, one of which has a non-linear, incident power-dependent behavior. On-bench characterization and MRI scans with a homogeneous phantom and a kiwi fruit prove the functionality and working principle.

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