Magnetic shim for magnetic field correction

Details Magnetic shim for magnetic field correction Magnetic shim for magnetic field correction

1989-06-02

1991-01-08

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

324318, G01R 3320

Patent

active

049839225

ABSTRACT:
A magnetic shim for correcting the n-th order harmonic of the Z-axis component of the main magnetic field of an NMR device has its end surfaces disposed such that each of the (n+2)-order harmonics of the magnetic fields generated by the end surfaces are nonzero and such that the sum of the (n+2)-order harmonics is equal to zero.

REFERENCES:
patent: 4710741 (1987-12-01), McGinley
Magnetic Field Profiling: Analysis and Correcting Coil Design, Magnetic Resonance in Medicine 1, 44-65 (1984).
Superconducting Magnets for MRI, IEEE Trans. on Nuclear Science vol. NS-31, No. 4, Aug. 1984.
Romeo, Francoise et al., Magnetic Resonance in Medicine 1 (1984) 44-65, particularly p. 54.

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