Microstructured Magnetic Materials
for Radio Frequency Operation in
Magnetic Resonance Imaging (MRI)

M C K Wiltshire⁽¹⁾, J B Pendry⁽²⁾, I R Young⁽³⁾_, D J Larkman⁽³⁾, D J Gilderdale⁽³⁾ and J V Hajnal⁽³⁾

Using ideas directly derived from photonic band gap materials, we have developed a novel microstructured electromagnetic material that has strong magnetic properties in the radio-frequency band, but exhibits no DC magnetism. We have used the material to guide RF flux from a remote object to the receiver coil in a Magnetic Resonance Imaging (MRI) machine, thus permitting a clear image to be obtained where none is normally detectable. The prototype material has provided a significant improvement in the MRI performance; improved materials are likely to have a major impact on these systems.

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last updated Fri 20 October 16:01 BST 2000 by JBP