Magnet system for nuclear magnetic resonance tomography devices

Details Magnet system for nuclear magnetic resonance tomography devices Magnet system for nuclear magnetic resonance tomography devices

1988-08-01

1989-11-07

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Magnet structure or material

335301, H01F 300

Patent

active

048795380

ABSTRACT:
A magnetic system for nuclear magnetic resonance tomography devices, for generating a homogeneous magnetic field in a volume, has a surface surrounding the volume which is permanently divided into a number of non-overlapping surface elements, each surface element having structure for permitting one or more iron laminae to be attached to the surface element. For any given installation, known calculating methods are used to determine which of the surface elements are to have the laminae attached thereto to produce the desired homogeneous magnetic field.

REFERENCES:
patent: 4698611 (1987-10-01), Vermilyea
patent: 4743853 (1988-05-01), Frese
Shimming a Superconducting Nuclear-Magnetic-Resonance Imaging Magnetic With Steel, Hoult et al., Review of Scientific Instruments vol. 56, No. 1, Jan. 1985, pp. 131-135.
Magnetic Field Profiling: Analysis and Correcting Coil Design, Romeo et al., Magnetic Resonance In Medicine vol. 1, No. 1, pp. 44-65 (1984).

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