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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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