Abstract #0435

Dielectric resonator for targeted breast MRI at 3T

Alena Shchelokova¹, Anna Mikhailovskaya¹, Viacheslav Ivanov¹, Ivan Sushkov², Irina Melchakova¹, Elizaveta Nenasheva³, Alexey Slobozhanyuk¹, Anna Andreychenko¹, 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, ³Giricond Research Institute, Ceramics Co., Ltd., Saint Petersburg, Russian Federation, ⁴Department of Radiology, Leiden University Medical Center, Leiden, Netherlands

A novel concept for targeted MRI that can be directly integrated into an existing clinical system is proposed and demonstrated for 3T breast imaging. A practical demonstration of the concept features a dielectric resonator, based on a composite material with a very high permittivity that is electromagnetically coupled to the birdcage body coil. In vivo breast imaging with the proposed resonator showed 70% higher signal-to-noise ratio and reduced motion artefacts, while the peak spatial SAR was reduced by a factor-of-eight on average, compared to standard birdcage body coil transmission and four-element array receive.

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