submitted to Science



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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