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. 01, 2005
Filed:
May. 15, 2003
Timothy J. Havens, Florence, SC (US);
Xianrui Huang, Clifton Park, NY (US);
David T Ryan, Niskayuna, NY (US);
Timothy J. Havens, Florence, SC (US);
Xianrui Huang, Clifton Park, NY (US);
David T Ryan, Niskayuna, NY (US);
GE Medical Systems Global Technology Company LLC, Waukesha, WI (US);
Abstract
A gradient compensation system comprising a magnet assembly, at least one field-generating gradient coil operable for generating magnetic field gradients in three orthogonal coordinates, and at least one gradient compensation coil positioned adjacent to the magnet assembly and operable for generating a magnetic field to compensate for leakage fields. A system for eliminating image distortion in magnetic resonance imaging comprising a magnet assembly comprising an imaging gradient coil and an imaging volume, and at least one gradient compensation coil positioned adjacent to the magnet assembly operable for generating gradient compensation fields in response to the magnetic field change. A method for counter-acting unwanted fields generated by eddy currents in conducting structures of a magnetic resonance system comprising generating a magnetic field change signal indicative of a change in a magnetic field of an imaging volume, determining a compensation signal in response to the magnetic field change signal, adding at least one gradient compensation coil to the magnetic resonance imaging system, and controlling current through the at least one gradient compensation coil.