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 Andreychenko^1,3

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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