The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 09, 2003
Filed:
Jan. 22, 2002
Pierre-Alain Bovier, Zurich, CH;
Robert Schauwecker, Zurich, CH;
Andreas Amann, Zurich, CH;
Daniel M. Eckert, Duebendorf, CH;
Bruker Biospin AG, Fällanden, CH;
Abstract
A magnet arrangement comprising a superconducting magnet coil system (C) for generating a magnetic field in the direction of a z axis in a working volume (AV) disposed on the z axis about z=0, wherein the field of the magnet coil system (C) in the working volume (AV) comprises at least one inhomogeneous contribution H ·z with n≧2 whose contribution to the total field strength on the z axis about z=0 varies with the nth power of z, and wherein a field shaping device (P) of magnetic material is provided, which is substantially cylindrically symmetrical with respect to the z axis, is characterized in that the magnet coil system (C) is provided for use in an apparatus for high-resolution magnetic resonance spectroscopy and the field shaping device (P) has, at least partially, a radial separation from the z axis of less than 80 mm and compensates for at least one of the inhomogeneous field contributions H ·z of the magnet coil system (C) by at least 50%, wherein at least one additional coil system (S) is provided which acts as a shim device in the magnet arrangement. This permits realization of a field shaping device from magnetic material of a suitable geometry such that at least part of the notch structures for field homogenization can be omitted in the magnet coil system.