Gradient coil system for a nuclear resonance tomography apparatu

Details Gradient coil system for a nuclear resonance tomography apparatu Gradient coil system for a nuclear resonance tomography apparatu

1989-11-28

1991-04-30

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

335299, G01R 3320

Patent

active

050121928

ABSTRACT:
A gradient coil system for a nuclear magnetic resonance tomography apparatus has main x and y coils, which are split arc saddle coils. The coil arcs are split so that their coupling increases with increasing distance from the plane of symmetry. The x and y main coils have respective x and y auxiliary coils allocated to them, which are also saddle coils and which have an aperture angle less than 90.degree., and which are arranged on the same cylindrical surface. The characteristics of the elementary saddle coils which define the gradient coil field are matched so that the noise terms of the series development of the gradient field are at least partially eliminated.

REFERENCES:
patent: 4486711 (1984-12-01), Frese et al.
patent: 4646024 (1987-02-01), Schenck et al.
patent: 4725803 (1988-02-01), Prevot et al.
patent: 4740772 (1988-04-01), Prevot
patent: 4833410 (1989-05-01), Briguet et al.
patent: 4924186 (1990-05-01), Kawamoto et al.

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