A CRLH Metamaterial based RF Coil Element for Magnetic Resonance Imaging at 7 Tesla

Conference: EuCAP 2009 - 3rd European Conference on Antennas and Propagation
03/23/2009 - 03/27/2009 at Berlin, Germany

Proceedings: EuCAP 2009

Pages: 4Language: englishTyp: PDF

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Rennings, A.; Erni, D. (General and Theoretical Electrical Engineering (ATE), University of Duisburg-Essen, 47048 Duisburg, Germany)
Mosig, J.; Bahr, A. (RF & Dosimetry Group, IMST GmbH, 47475 Kamp-Lintfort, Germany)
Caloz, C. (Poly-Grames Research Center, École Polytechnique de Montréal, Montréal, H3T 1J4, Québec, Canada)
Ladd, M. E. (Erwin L. Hahn Institute for MRI, University of Duisburg-Essen, 45141 Essen, Germany)

The possibility of using composite right/left-handed (CRLH) zeroth-order resonant antennas (ZORAs) in magnetic resonance imaging (MRI) to provide the highly uniform RF magnetic field required for high-quality MRI is explored. A series-mode metal-insulator-metal (MIM) CRLH zeroth-order resonant “coil” (ZORC) element is proposed for this purpose. This ZORC element is shown to provide a very uniform field, appropriate for sagittal or coronal MRI images, and to exhibit a favorable loaded/unloaded Q-factor ratio of around 1/2.