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:
Feb. 14, 2017
Filed:
Mar. 17, 2014
Siemens Medical Solutions Usa, Inc., Malvern, PA (US);
Tiejun Zhao, Pittsburgh, PA (US);
Siemens Healthcare GmbH, Erlangen, DE;
Abstract
A method for automated magnetic field shimming in a MR imaging system includes generating RF excitation pulses in anatomy, generating slice select magnetic field gradients on a static magnetic field and generating a plurality of shimming routines. The method also includes acquiring maps of the static magnetic field between each shimming routine and determining a base function for each of the plurality of shimming coils from: (i) intermediate magnitudes and directions of the static magnetic field produced by each of the plurality of shimming coils during each shimming routine; and (ii) intermediate currents supplied to each of the plurality of shimming coils during each shimming routine. The method further includes determining updated magnitudes and directions of the static magnetic field produced by each of the plurality of shimming coils by expanding the determined base function for each of the plurality of shimming coils into low order polynomials.