On the applications of mu=-1 metamaterial lenses for magnetic resonance imaging

Details On the applications of mu=-1 metamaterial lenses for magnetic resonance imaging On the applications of mu=-1 metamaterial lenses for magnetic resonance imaging

2009-09-02

arxiv.org/abs/0909.0550v1

Physics

Medical Physics

21 pages, 10 figures

Scientific paper

In this work some possible applications of negative permeability magnetic metamaterial lenses for magnetic resonance imaging (MRI) are analyzed. Metamaterials are artificial composites designed to have a given permittivity and/or permeability, including negative values for these constants. It is shown that using magnetic metamaterials lenses it is possible to manipulate the spatial distribution of the radio-frequency (RF) field used in MR systems and, under some circumstances, improve the sensitivity of surface coils. Furthermore a collimation of the RF field, phenomenon that may find application in parallel imaging, is presented. MR images of real tissues are shown in order to prove the suitability of the theoretical analysis for practical applications.

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