Planar Magnetic Metamaterial Slabs for Magnetic Resonance Imaging Applications

A type of planar magnetic metamaterial is proposed with a square winding microstructure as a superlens for magnetic resonance imaging (MRI) applications. A direct magnetic field mapping measurement demonstrates that the radio-frequency magnetic field passing through the superlens is increased by as...

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Veröffentlicht in:Chinese physics letters 2014-07, Vol.31 (7), p.184-187, Article 077801
1. Verfasser: 李春来 郭洁 张澎 余铨强 马伟涛 缪锡根 赵治亚 栾琳
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Sprache:eng
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Zusammenfassung:A type of planar magnetic metamaterial is proposed with a square winding microstructure as a superlens for magnetic resonance imaging (MRI) applications. A direct magnetic field mapping measurement demonstrates that the radio-frequency magnetic field passing through the superlens is increased by as high as 46.9% at the position of about 3 cm behind the superlens. The resonance frequency of the fabricated slabs is found to be in good agreement with the target frequency (63.6 MHz) for a 1.5 T MRI system. MRI experiments with the magnetic superlens show that the intensity of the image and the SNR (signal-to-noise ratio) are both enhanced, implying promising MRI applications of our planar magnetic superlens.
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/31/7/077801