Electromagnet for NMR tomography

Details Electromagnet for NMR tomography Electromagnet for NMR tomography

1983-12-08

1986-05-20

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

324315, G01R 3320

Patent

active

045904286

ABSTRACT:
An electromagnet for generating the constant magnetic field required in NMR tomography includes a superconductive coil system consisting of at least one circular cylindrical field coil (1) and at least one correction coil (2, 3) concentric with the field coil. The coil system is enclosed in a ferromagnetic cylindrical shell (13) whose influence on the homogeneity of the magnetic field is compensated by the particular dimensioning of the field and correction coils. The magnetic field is produced by the coil system (1, 2, 3) in the interior space defined by it, which space is accessible and suitable to receive the body presented for examination. The cylindrical shell (13) may be closed at its ends by ring-shaped ferromagnetic plates (14). The cylindrical shell (13), complete with plates (14), may directly form the exterior wall of the Dewar.

REFERENCES:
patent: 3569823 (1971-03-01), Golay
patent: 4429277 (1984-01-01), Sugimoto
patent: 4467282 (1984-08-01), Siebold
patent: 4490675 (1984-12-01), Knuettel

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