Travelling-wave nuclear magnetic resonance

David O. Brunner, Nicola De Zanche, Jürg Fröhlich, Jan Paska and Klaas P. Pruessmann ()
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David O. Brunner: Institute for Biomedical Engineering, University of Zürich and ETH Zürich, Gloriastrasse 35, 8092 Zürich, Switzerland
Nicola De Zanche: Institute for Biomedical Engineering, University of Zürich and ETH Zürich, Gloriastrasse 35, 8092 Zürich, Switzerland
Jürg Fröhlich: Laboratory for Electromagnetic Fields and Microwave Electronics, ETH Zürich, Gloriastrasse 35, 8092 Zürich, Switzerland
Jan Paska: Laboratory for Electromagnetic Fields and Microwave Electronics, ETH Zürich, Gloriastrasse 35, 8092 Zürich, Switzerland
Klaas P. Pruessmann: Institute for Biomedical Engineering, University of Zürich and ETH Zürich, Gloriastrasse 35, 8092 Zürich, Switzerland

Nature, 2009, vol. 457, issue 7232, 994-998

Abstract: Travelling-wave NMR Nuclear magnetic resonance (NMR) and magnetic resonance imaging (MRI) are widely used in the sciences and medicine. Although the implementation details differ from application to application, the underlying detection principle is the same: the need for intimate coupling (and hence usually close proximity) between nuclear magnetization in the sample and the detector. Brunner et al. show that it is possible to abandon this traditional detection principle, and that the nuclear magnetization signal can be excited and detected by long-range interaction using travelling radiofrequency waves sent and received by an antenna. This approach offers more uniform coverage of larger samples. And by freeing up space in the centre of the costly high-field magnets needed for MRI, it could potentially make the imaging experience more comfortable for human subjects.

Date: 2009
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DOI: 10.1038/nature07752

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