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The principle of reciprocity
1Institute for Biodiagnostics, National Research Council, Winnipeg, Canada. david.hoult@nrc-cnrc.gc.ca
Journal of Magnetic Resonance (San Diego, Calif. : 1997)
|September 6, 2011
Summary
Researchers explain how Lorentz
Area of Science:
- Physics
- Nuclear Magnetic Resonance (NMR) Spectroscopy
Background:
- Early NMR spectroscopy faced challenges with poor signal-to-noise ratios.
- The development of superconducting magnets highlighted the need for fundamental understanding of signal reception.
Purpose of the Study:
- To describe the realization of quantifying NMR signal reception.
- To explain the foundational principles behind NMR signal quantification.
Main Methods:
- Application of Lorentz's Principle of Reciprocity to NMR signal reception.
- Analysis of fundamental phenomena governing signal-to-noise ratios.
Main Results:
- NMR signal reception can be quantified using a simple, fundamental approach.
- A pseudo-static formula derived from Lorentz's Principle of Reciprocity is presented.
Conclusions:
- Lorentz's Principle of Reciprocity provides a basic framework for understanding NMR signal quantification.
- The derived formula has been instrumental in signal-to-noise calculations for decades.
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