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. 13, 2001
Filed:
May. 04, 1999
Daniel J. Schaefer, Waukesha, WI (US);
General Electric Company, Milwaukee, WI (US);
Abstract
Vibration of the magnet assembly in a MRI system perturbs the magnetic field and adversely affects the images produced by the system. The perturbation of the magnetic field can be sensed by an apparatus having a source which emits a first signal that is reflected off the magnet assembly. A receiver detects a second signal formed by the reflected portion of the first signal. The first and second signals are processed to produce an output signal representing movement of the electromagnet and thus variation of the magnetic field. That output signal can be used by to components of the magnetic resonance imaging system to compensate for the effects that the vibration has on the images.