Electromagnet for nmr tomography

Details Electromagnet for nmr tomography Electromagnet for nmr tomography

G - Physics

01

R

324/1, 317/29.6

G01R 33/381 (2006.01) G01R 33/3815 (2006.01) G01R 33/3873 (2006.01) G01R 33/3875 (2006.01) G01R 33/421 (2006.01)

Patent

CA 1198164

ELECTROMAGNET FOR NMR TOMOGRAPHY ABSTRACT An electromagnet for generating the constant magnetic field required in NMR tomography includes a super- conductive 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 dimension- ing 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 examin- ation. 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. (Fig. 1).

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