Method of determining the spectral distribution of the nuclear m

Details Method of determining the spectral distribution of the nuclear m Method of determining the spectral distribution of the nuclear m

1987-02-27

1989-03-21

Levy, Stewart J.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324307, G01R 3320

Patent

active

048147109

ABSTRACT:
In order to avoid the disturbing influence of the decay of the transverse magnetization and/or of the eddy currents, a sequence comprising at least two high-frequency pulses is repeated n times, the distance being varied from sequence to sequence so that the position in time of the echo signals produced by the high-frequency pulses varies from sequence to sequence. If each time a sample value from each echo signal is used for the Fourier transformation which has a defined position with respect to the respective sequence, a frequency spectrum is obtained which does not depend or depends only to a smaller extent upon the said disturbing influences.

REFERENCES:
patent: 4583044 (1986-04-01), Case et al.
patent: 4709212 (1987-11-01), MacFall et al.
"Stimulated Echo Imaging", J. Frahm et al. Journal of Magnetic Resonance, vol. 64, pp. 81-93 Academic Press (1985).

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