General Electric Company

Lydall, Inc.

Kathleen Melanie Amm

Evangelos Trifon Laskaris

Paul Shadforth Thompson

Bulent Aksel

Michael Anthony Palmo, Jr

Xianrui Huang

Bruce Campbell Amm

Liang Li

Minfeng Xu

Ernst Wolfgang Stautner

Yan Zhao

Anbo Wu

Mark Gilbert Benz

Gerald Burt Kliman

Bruce Alan Knudsen

Robert John Zabala

James William Bray

Thomas Robert Raber

Longzhi Jiang

Judson Sloan Marte

William D Barber

Paul St Mark Shadforth Thompson

William Louis Einziger

Israel S Jacobs

Jalal Hunain Zia

Juliana Chiang Shei

Harold Jay Patchen

Paul Shadworth Thompson

Christopher Judson Hardy

Hendrik Pieter Jacobus De Bock

Yogen Vishwas Utturkar

Ronald Dean Watkins

Weijun Yin

Sergio Paulo Martins Loureiro

Kenneth William Rohling

Yuri Lvovsky

Tao Deng

Tunc Icoz

Tao Zhang

John Arthur Urbahn

John Scaturro, Jr

Johannes Martinus Van Oort

Sergio Martins Loureiro

Gregory Citver

Wensen Wang

Kenneth James McGivern

In-Hua Xu

J Anne Ryan, Legal Representative

David R Barber

Wen Shang

A cryogenic cooling system includes a chamber defined by an outer wall and an inner wall, the chamber housing at least one component to be cooled; a wicking structure in thermal contact with one of the outer wall and the inner wall of the chamber; and a delivery system in a spaced apart relationship with the chamber and fluidly connected to the wicking structure for transporting a working fluid to and from the wicking structure. Also provided is a magnetic resonance imaging system including the cryogenic cooling system.

Cryogenic cooling system with wicking structure

Systems and methods for self-sealing a coldhead sleeve of a magnetic resonance imaging system are provided. One coldhead sleeve arrangement includes a coldhead sleeve configured to receive therein a coldhead of an MRI system and having an open end. The coldhead sleeve arrangement also includes a sealing member coupled at the open end of the coldhead sleeve and configured in a normally closed position covering the open end.

System and method for self-sealing a coldhead sleeve of a magnetic resonance imaging system

A magnetizing coil unit and a method of making a magnetizing coil unit is provided. The coil includes a solenoid coil having a coiled copper sheet in which the width of the copper sheet is equal to the height of the solenoid coil. A magnetizing assembly includes a plurality of magnetizing coil units.

Method and apparatus for magnetizing a permanent magnet

A system and method for a magnetic resonance (MR) imaging system includes a coil form, at least one magnet positioned about the coil form and configured to generate a magnetic field, at least one gradient coil for manipulating the magnetic field generated by the at least one magnet by way of a gradient field, and a heat pipe thermally connected to the coil form and having a cryogen therein. The MR imaging system also includes a cryocooler connected to the heat pipe to cool the heat pipe and the cryogen, wherein the coil form is comprised of a thermally conductive material in which eddy currents are substantially reduced during operation of the at least one gradient coil. The present invention has been described in terms of the preferred embodiment, and it is recognized that equivalents, alternatives, and modifications, aside from those expressly stated, are possible and within the scope of the appending claims.

Heat pipe cooled suerconducting magnets with ceramic coil forms

A transverse gradient coil for an MRI system is provided. The transverse gradient coil comprises a first coil layer; and an insulation layer made of thermoplastic insulation resin which has a thermal conductivity greater than 1.5 W/m&#xb7;K, the insulation layer having one side bonded to the first coil layer. A method for manufacturing the transverse gradient coil by injection molding or compression molding is also provided.

Transverse gradient coil for MRI systems and method for manufacturing the same

A magnet assembly for a Magnetic Resonance Imaging (MRI) system includes a vacuum vessel including an inner cylinder, an outer cylinder and a pair of tapered flanges connecting the inner and outer cylinders. The inner cylinder is made of a composite material. The outer cylinder and flanges are composed of several magnetic segments that provide a magnetic flux return path with low eddy currents. The segments are bonded together and electrically insulated from each other. A container, a thermal shield and a superconducting magnet coil assembly are disposed within the vacuum vessel. The superconducting magnet coil assembly includes a non-conductive cylindrical structure and superconducting coils. A thermally conductive cable is wrapped around the cylindrical structure and coils to form a thermally conductive envelope.

Magnet assembly for magnetic resonance imaging system

Heat pipe cooled superconducting magnets with ceramic coil forms

A permanent magnet assembly for an imaging apparatus having a permanent magnet body having a first surface and a stepped second surface which is adapted to face an imaging volume of the imaging apparatus, wherein the stepped second surface contains at least four steps.

Multiple ring polefaceless permanent magnet and method of making

A method of making a permanent magnet body is provided. The method includes providing a first precursor body comprising a plurality of blocks and magnetizing the first precursor body to form a first permanent magnet body. A recoil magnetization pulse may be applied to the permanent magnet body after the magnetization. The precursor body may be heated during magnetization. A power supply containing a battery may be used to energize a pulsed magnet used to magnetize the precursor body.

A Magnetic Resonance Imaging (MRI) system having a vacuum vessel positioned about an imaging volume, one or more high temperature superconducting coils positioned within the vacuum vessel, and a cryocooler coupled to the vacuum vessel to operate the superconducting coil at a temperature above 10 K. At least one gradient coil is positioned between an imaging volume and the superconducting coil without any thermal shielding interposed between the gradient coil and the superconducting coil. A method of forming an MRI system includes forming at least one winding of the main field generating coils with high temperature superconducting material, positioning the winding in a vessel for receiving cryogenic fluid, and positioning a gradient coil between the imaging volume and the winding without placing a thermal radiation shield between the gradient coil and the winding.

Magnetic resonance imaging system with reduced cooling needs

Disclosed herein is method for making a wire comprising contacting a first end of a first superconducting wire with a second end of a second superconducting wire, wherein the superconducting wire comprises a superconducting filament having a superconducting composition comprising magnesium diboride; heating the first end of the first superconducting wire with the second end of the second superconducting wire at a point to form a joint, wherein the superconducting filament having the superconducting composition is in continuous electrical contact with any other part of the superconducting filament after the formation of the joint.

Superconducting wire, method of manufacture thereof and the articles derived therefrom

A cryogenically cooled radiofrequency (RF) coil structure for use in Magnetic Resonance Imaging (MRI) and method for cryogenically cooling RF coils are provided. The cryogenically cooled RF coil structure comprises a sealed structure constructed of non-conducting material and adapted for containing a cooling substance and at least one RF coil disposed integrally in contact with the sealed structure such that sealed structure and integrally disposed RF coil are disposed about an object to be imaged.

Cryogenically cooled radiofrequency coil array for magnetic resonance imaging

A permanent magnet assembly comprising a fixed permanent magnet body and a movable permanent magnet body which is movable relative to the fixed permanent magnet body.

Permanent magnet assembly with movable permanent body for main magnetic field adjustable

An imaging apparatus, such as an MRI system, contains at least one layer of soft magnetic material between the yoke and each permanent magnet. This imaging apparatus may be operated without pole pieces due to the presence of the soft magnetic material. The permanent magnets may be fabricated by magnetizing unmagnetized alloy bodies after the unmagnetized alloy bodies have been attached to the yoke.

Permanent magnet assembly and method of making thereof

Growing community of inventors

Clifton Park, NY, United States of America

Kathleen Melanie Amm