Switchable gradient coil arrangement

Details Switchable gradient coil arrangement Switchable gradient coil arrangement

1999-11-09

2000-12-05

Donovan, Lincoln

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Magnet structure or material

324320, H01F 500

Patent

active

061572802

ABSTRACT:
A switchable gradient coil arrangement for a magnetic resonance tomography apparatus, has conductor ends in the primary plane (or planes) that can be differently connected to one another and/or to conductor ends in the secondary plane (or planes) to form respective coil arrangements having different field qualities/performance features. The connections are produced by a switch system composed of standard switches for the logical interconnection of the individual sub-coils, in the form of at least four bipolar switches. One of these switches, as a power connection switch connects the ends of each sub-coil to the power terminals, one switch is connected parallel to the sub-coil, and at least one switch is arranged in a connection branch that branches for optional connection to other sub-coils.

REFERENCES:
patent: 4520315 (1985-05-01), Loeffler et al.
patent: 4991586 (1991-02-01), Mueller et al.
patent: 5345178 (1994-09-01), Manabe et al.
patent: 5349318 (1994-09-01), Inoue
patent: 5736865 (1998-04-01), Katznelson et al.

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