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

1989-02-10

1990-05-08

Williams, Hezron E.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

G01R 3320

Patent

active

049241834

ABSTRACT:
A method of a device for determining the spectral distribution of a nuclear magnetization in a limited volume, wherein each sequence of r.f. and gradient excitation comprises a sub-sequence which dephases the nuclear magnetization everywhere outside a defined layer. This sub-sequence is followed by three r.f. pulses, the first two of which are layer-selective. These three r.f. pulses excite the nuclear magnetization in an area of intersection between said layer and two layers which extend perpendicularly to one another and to said layer. In order to suppress undesirable FID signals and to enhance the spectrum, phase cycling is performed.

REFERENCES:
patent: 4748409 (1988-05-01), Frahm et al.
patent: 4843321 (1989-06-01), Sotak
patent: 4843549 (1989-06-01), McKinnon
P. R. Luyten et al "Solvent-Suppressed Spatially Resolved Spectroscopy-An Approach to High-Resolution NMR on a Whole-Body MR System", Journal of Magnetic Resonance 67, 148-155 (1986).

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