Magnetic resonance apparatus including elements for homogenizing

Details Magnetic resonance apparatus including elements for homogenizing Magnetic resonance apparatus including elements for homogenizing

1994-06-06

1995-10-10

Arana, Louis

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

324319, G01V 300

Patent

active

054573882

ABSTRACT:
Magnetic resonance apparatus includes an essentially cylindrical magnet system (2) for generating a steady magnetic field (H) in a measurement space (28), a coil system (4) for generating gradient fields in the measurement space, and at least one RF coil (10) which is arranged in the immediate vicinity of the measurement space. In order to increase the homogeneity of the main magnetic field (H), approximately annular first elements (44) of a magnetically conductive material are provided within the magnet system (2) so as to extend coaxially with respect to the axis (9) of the magnet system. In order to minimize the amount of magnetically conductive material required, the first elements (44) are situated in the immediate vicinity of the RF coil (10).

REFERENCES:
patent: 4771243 (1988-09-01), Vreugdenhil et al.
patent: 4853663 (1989-08-01), Vermilyea
patent: 4931759 (1990-06-01), Breneman et al.
patent: 4983922 (1991-01-01), Tahara
patent: 5237275 (1993-08-01), Takechi et al.

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