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Abstract #3565

Lenz lenses: RF field amplification and increased sensitivity using passive inductive elements

Peter T. While1,2, Nils Spengler3,4, and Jan G. Korvink3

1Department of Radiology and Nuclear Medicine, St. Olav's University Hospital, Trondheim, Norway, 2IMTEK - Laboratory for Simulation, University of Freiburg, Freiburg, Germany, 3Institute of Microstructure Technology, Karlsruhe Institute of Technology, Karlsruhe, Germany, 4IMTEK - Laboratory for Microactuators, University of Freiburg, Freiburg, Germany

Lenz lenses are discrete elements that focus magnetic flux by virtue of their configuration. By the principle of reciprocity, Lenz lenses may be used to increase both B1-field strength and receiver sensitivity in an NMR experiment. We present the theory that describes Lenz lenses and their geometrical optimization, plus some preliminary experimental results that demonstrate a three-fold increase in local SNR.

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