Scan room for magnetic resonance imager

Details Scan room for magnetic resonance imager Scan room for magnetic resonance imager

1988-07-05

1990-12-25

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

128653A, G01R 3320

Patent

active

RE0335053

ABSTRACT:
A scan room is disclosed in which a magnetic resonance (MR) imager can be located that will reduce to an acceptable level outside the room the strength of the fringe magnetic fields produced by the imager and that will shield the imager from magnetic, radio frequency electromagnetic, and electric fields outside the room, while allowing the magnet of the imager to be shimmed to produce a sufficient homogeneous field to obtain the desired images. The scan room is rectangular although it could be cylindrical or spherical. Its walls, floor, and ceiling are made of a plurality of steel plate welded together. The thickness of the walls can vary as the distance from the magnet and the permeability of the steel plates varies. A steel door allows patients and medical personnel to enter and leave the room.

REFERENCES:
patent: 4490675 (1984-12-01), Knuettel
patent: 4564812 (1986-01-01), Van Dijk
patent: 4585994 (1986-04-01), Ewing
patent: 4613820 (1986-09-01), Edelstein et al.
patent: 4646046 (1987-02-01), Vavrek et al.
General Electric, "NMR Site Planning Considerations", Copyright 1982, The General Electric Company, pp. 1-12.

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