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Abstract #4171

Can we achieve a better performance in metamaterial-assisted MRI combined to an SLR-based fast spin-echo sequence?

Ekaterina A. Brui1, Stanislas Rapacchi2, David Bendahan2, and Anna Andreychenko1,3
1Department of Physics and Engineering, ITMO University, Saint Petersburg, Russian Federation, 2Aix-Marseille Universite, CNRS, Centre de Résonance Magnétique Biologique et Médicale, Marseille, France, 3Center of Diagnostics and Telemedicine Technologies, Department of Health Care of Moscow, Research and Practical Clinical, Moscow, Russian Federation

There has been previously proved that a metamaterial-based wireless coil (WLC) provided a 48-fold lower SAR in 1.5T wrist MRI in comparison to conventional RF setup. This can allow to extend the acceptable threshold of energy deposition for SAR-demanding pulse sequences. This study demonstrates that SLR-based FSE together with the WLC allowed to increase the slice selectivity while still being within the safe SAR limits. The actual energy deposition was decreased as compared to a conventional RF setup. The combination of this coil and SLR-based FSE offers an interesting alternative for investigations which require scanning in a “Low SAR” regim.

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