Nuclear magnetic resonance spectrometer

Details Nuclear magnetic resonance spectrometer Nuclear magnetic resonance spectrometer

1990-11-06

1992-12-22

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324307, G01R 3320

Patent

active

051736616

ABSTRACT:
A nuclear magnetic resonance spectrometer, in particular a nuclear spin tomograph serving to investigate biological samples, comprising a magnetic coil for generating a substantially homogeneous magnetic field in a volume under examination, and a set of shim coils for eliminating any remaining inhomogeneities of the magnetic field is characterized in that at least one additional electric conductor, preferably an additional shim coil, is provided which may be arranged in the volume under examination, in the direct vicinity of the sample, that the additional conductor is designed in such a way that it will generate an inhomogeneous magnetic field when loaded with current, and that it can be loaded with currents of a type generating inhomogeneous magnetic fields which will eliminate, at least partially, and in a selected area in the sample, local field inhomogeneities resulting from susceptibility variations within the sample, for example. This enables the accuracy of the spectroscopy results to be improved.

REFERENCES:
patent: 3622869 (1971-11-01), Golay
patent: 4812797 (1989-03-01), Jayakumar
patent: 4899109 (1990-02-01), Tropp et al.
patent: 4987371 (1991-01-01), Glover et al.
patent: 5006804 (1991-04-01), Dorri et al.

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