Method for the generation of an NMR spectrum without side-bands

Details Method for the generation of an NMR spectrum without side-bands Method for the generation of an NMR spectrum without side-bands

1993-02-03

1994-10-11

Wieder, Kenneth A.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324307, G01R 3320

Patent

active

053550862

ABSTRACT:
In a method for the generation of a nuclear magnetic resonance (NMR) spectrum from a measuring volume, which is exposed to a highly homogeneous stationary magnetic field B.sub.0, a radio frequency (RF)-pulse is irradiated in a first run into the measuring volume in order to excite the concerned nuclear spins; at least one magnetic gradient field G is switched, for example for selecting a certain slice from the measuring volume and after switching off the magnetic gradient field G, a first data set is recorded which contains the observable measuring signals from the measuring volume, subsequently the method is repeated in a second run with a magnetic gradient field -G which has the opposite polarity to the magnetic gradient field G, whereas the remaining experimental parameters of the first run are maintained, wherein after switching off the magnetic gradient field -G a second data set is recorded and added to the first data set. In this manner, side bands in NMR spectra and artifacts in NMR-images, respectively, can be compensated, which are caused by disturbances of the magnetic field B.sub.0 owing to the switching of the gradient field G.

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NMR fur Mediziner und Biologen, by K. H. Hausseer and H. R. Kalbitzer, Springer-Verlag, Berlin, 1989, p. 148ff.

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