General Electric Company

Stephen Randolph Elgin, Ii

Minfeng Xu

Timothy John Havens

Weijun Shen

Michael R Eggleston

Jinhua Huang

Ricardo Becerra

Somanath Nagendra

Jian-She Wang

Richard Thomas Hackett

A passive magnetic field shielding system for shielding a fringe magnetic field is described. The passive magnetic field shielding system includes a magnet configured to generate a uniform magnetic field, an imaging system with associated electronics coupled to the magnet, and a passive shield configured to reduce the strength of the fringing magnetic field to approximately five Gauss at a distance from the passive shield.

Systems and methods for passively shielding a magnetic field

Systems, methods and apparatus are provided through which in some embodiments a magnetic resonance imaging (MRI) system includes one or more magnetic shield coils positioned asymmetrically in the casing and also positioned in close proximity to one of two apertures of an inner bore of the MRI system. In those embodiments, the position of the one or more magnetic shield coils provides an asymmetric magnetic stray field during operation of the MRI system, which in turn allows operation of electronic medical diagnostic equipment or electronic medical monitoring equipment in close proximity to the MRI.

Systems, methods and apparatus of a magnetic resonance imaging system to produce a stray field suitable for interventional use

The present invention provides a method and apparatus for measuring the level of a liquid cryogen. The invention provides for use of a current source (), a length, or multiple lengths, of superconducting filament () situated within a cryostat () containing a cryogenic fluid () and a voltmeter () for measuring the voltage drop across the filament (). The invention further provides a method for using said apparatus.

Liquid helium level sensor for use in a cryogenic environment and method for assembling same

The present invention provides a magnet support structure. A cylindrical portion comprises a plurality of laminated composite layers concentrically assembled to one another along a longitudinal axis. An integral left flange is comprised of the laminated composite layers concentrically assembled with respect to a left flange axis. The left flange axis is perpendicular to the longitudinal axis. An integral right flange is comprised of the laminated composite layers concentrically assembled with respect to a right flange axis. The right flange axis is perpendicular to the longitudinal axis. A method for fabricating the magnet support structure comprises concentrically assembling the plurality of laminated composite layers along the longitudinal axis forming the cylindrical portion. Concentrically assembling the laminated composite layers with respect to the left flange axis forming the integral left flange. Concentrically assembling the laminated composite layers with respect to the right flange axis forming the integral right flange.

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Florence, SC, United States of America

Stephen Randolph Elgin, Ii