NMR tomography apparatus

Details NMR tomography apparatus NMR tomography apparatus

1985-03-25

1987-06-02

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324320, G01R 3320

Patent

active

046707166

ABSTRACT:
The invention relates to an MR tomography apparatus, comprising three coil systems for generating a magnetic field which extends in the direction of a steady, homogeneous main field and which varies linearly as a function of the location. In addition, there is provided at least one further coil system which generates a magnetic field which also extends in the direction of the homogeneous magnetic field but which varies non-linearly as a function of the location. The coil systems are supplied with a current which is always proportioned so that the superposition of the magnetic fields of the coil systems produces the desired variation in time and space of the magnetic flux density of the steady field. The effect of eddy currents or other inaccuracies can then be reduced by the additional coil system.

REFERENCES:
patent: 3406333 (1968-10-01), Nelson
patent: 4480228 (1984-10-01), Bottomley

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