Travelling-wave Nmr

摘要

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.