Abstract #0022

Volumetric resonators based on novel materials for 3 T MRI

Anna Mikhailovskaya¹, Alena Shchelokova¹, Dmitry Dobrykh¹, Ivan Sushkov², Alexey Slobozhanyuk^1,3, and Andrew Webb⁴

¹Department of Nanophotonics and Metamaterials, ITMO University, Saint Petersburg, Russian Federation, ²Department of Radiology, Vreden Russian Institute of Traumatology and Orthopedics, Saint Petersburg, Russian Federation, ³Nonlinear Physics Center, Research School of Physics and Engineering, Australian National University, Canberra, Australia, ⁴C.J. Gorter Center for High Field MRI, Department of Radiology, Leiden University Medical Center, Leiden, Netherlands

We propose and characterise a novel metamaterial-inspired approach which reduces substantially the required outer diameter of a dielectric resonator thus making possible to design compact structures for 3 T. When used in an inductively-coupled wireless mode, the sensitivity of the “meta-resonator” was measured to be slightly higher than that of a standard dielectric resonator operating in its degenerate circularly-polarized HEM₁₁ modes. This study demonstrates the first application of a metamaterial-based approach to MR volume coil design.

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