System for generating magnetic fields utilized for magnetic reso

Details System for generating magnetic fields utilized for magnetic reso System for generating magnetic fields utilized for magnetic reso

1988-04-21

1989-08-29

Levy, Stewart J.

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

G01R 3320

Patent

active

048620866

ABSTRACT:
In an MRI apparatus, a static magnetic field is generated by a pair of magnets facing each other within a spacing. An axis direction of a subject inserted within the spacing is orthogonal to that of the static magnetic field. Gradient magnetic fields with X, Y and Z direction are generated by two pairs of plane coils, two pairs of plane coils, and a pair of plane coils, respectively, arranged between a pair of magnets. The plane coils for generated the gradient magnetic field in X direction is the same form as the plane coils for generating the gradient magnetic field in Z direction. By such an arrangement, gradient magnetic fields generated within the spacing have enough magnitude and linearity to obtain magnetic resonance signals. It is also enough spacing to insert a subject.

REFERENCES:
patent: 4297637 (1981-10-01), Crooks et al.
patent: 4714886 (1987-12-01), Halpern
patent: 4728895 (1988-03-01), Briquet et al.

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