Method and device for NMR spectroscopy

Details Method and device for NMR spectroscopy Method and device for NMR spectroscopy

1985-04-23

1987-09-01

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324311, G01R 3320

Patent

active

046911626

ABSTRACT:
The invention proposes a method and a device in which resonance signals (generated for NMR imaging) are sampled in the presence of a static or semi-static and time modulated gradient magnetic field with the gradient direction of the fields applied being mutually perpendicular. The resonance signals are conditioned prior to the start of sampling. The sampled signals are associated with spatial frequencies (i.e. points in a spatial frequency space (k.sub.x, k.sub.y) which is the (2-D) Fourier transform of the actual (s, y) space), which are determined by the applied gradient fields. The static or semi-static gradient field always produces an increase (for example, in k.sub.x), while the time modulated gradient field always produces an image frequency which lies between two limits (k.sub.y and k.sub.y +k.sub.y). Consequently, the invention enables determination of NMR spectroscopy data in an entire band in the (k.sub.x, k.sub.y) space. The method and device according to the invention are also applicable for 3-D imaging of 3-D objects.

REFERENCES:
patent: 4290019 (1981-09-01), Hutchison
patent: 4451788 (1984-05-01), Edelstein
patent: 4516075 (1985-05-01), Moran

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