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Methods of selectively enhancing or suppressing the signal from a particular molecular substance by using its spin properties, typically through spin spin coupling, e.g. J-modulation. | | | | | |
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Edward Purcell and Felix Bloch discovered the basic of spectroscopy in 1946 (see MRI History). Nuclear magnetic resonance spectroscopy ( NMR Spectroscopy or MRS) is an analytical tool, based on nuclei that have a spin (nuclei with an odd number of neutrons and/or protons) like 1H, 13C, 17O, 19F, 31P etc.
Through nuclear magnetic principles as precession, chemical shift, spin spin coupling etc., the analysis of the content, purity, and molecular structure of a sample is possible. The spectrum produced by this process contains a number of peaks; the highs and the positions of these peaks allow the exact analysis. Unknown compounds can be matched against spectral libraries. Even very complex organic compounds as enzymes and proteins can be determined. For the wide uses of NMR spectroscopy (from mineralogy to medicine) there is a variety of different techniques available.
See Spectroscopic Imaging Techniques. | | | | • View the DATABASE results for 'Spectroscopy' (90).
| | | • View the NEWS results for 'Spectroscopy' (3).
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| | | | | | • View the DATABASE results for 'T2 Time' (16).
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| | | | • View the DATABASE results for 'T2*' (42).
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