公开(公告)号：US09274188B2

公开(公告)日：2016-03-01

申请号：US13690392

申请日：2012-11-30

Applicant: General Electric Company

Inventor： Weijun Shen ,  Timothy J. Havens ,  Longzhi Jiang ,  Tesfaye K. Kidane

IPC: G01V3/00 ,  G01R33/34 ,  G01R33/387 ,  G01R33/3815 ,  G01R33/3875

CPC classification number: G01R33/34023 ,  G01R33/3815 ,  G01R33/387 ,  G01R33/3875

Abstract: A magnet apparatus for a magnetic resonance imaging system, the magnet apparatus includes a cylindrical vacuum vessel, a closed loop cooling system disposed within the vacuum vessel and a cylindrical thermal shield disposed between the vacuum vessel and the closed loop cooling system. A set of passive compensation coils are disposed within the vacuum vessel and used to compensate for magnetic field distortion caused by mechanical vibrations within the magnet apparatus.

Abstract translation: 一种用于磁共振成像系统的磁体装置，磁体装置包括圆柱形真空容器，设置在真空容器内的闭环冷却系统和设置在真空容器和闭环冷却系统之间的圆柱形热屏蔽。 一组无源补偿线圈设置在真空容器内，用于补偿由磁体装置内的机械振动引起的磁场畸变。

公开(公告)号：US09279871B2

公开(公告)日：2016-03-08

申请号：US13690312

申请日：2012-11-30

Applicant: General Electric Company

Inventor： Weijun Shen ,  Timothy J. Havens ,  Longzhi Jiang ,  Tesfaye K. Kidane

IPC: G01V3/00 ,  G01R33/34 ,  G01R33/389 ,  G01R33/565 ,  G01R33/3875

CPC classification number: G01R33/34092 ,  G01R33/3875 ,  G01R33/389 ,  G01R33/56509 ,  G01R33/56518

Abstract: A magnet apparatus for a magnetic resonance imaging system, the magnet apparatus includes a vacuum vessel, a helium vessel disposed within the vacuum vessel and a thermal shield disposed between the vacuum vessel and the helium vessel. A set of passive compensation coils are disposed within the vacuum vessel or the helium vessel and used to compensate for magnetic field distortion caused by mechanical vibrations within the magnet apparatus.

Abstract translation: 一种用于磁共振成像系统的磁体装置，磁体装置包括真空容器，设置在真空容器内的氦容器和设置在真空容器和氦容器之间的热屏蔽。 一组无源补偿线圈设置在真空容器或氦容器内，并用于补偿由磁体设备内的机械振动引起的磁场变形。

公开(公告)号：US20140155268A1

公开(公告)日：2014-06-05

申请号：US13690392

申请日：2012-11-30

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Weijun Shen ,  Timothy J. Havens ,  Longzhi Jiang ,  Tesfaye K. Kidane

IPC: G01R33/34

CPC classification number: G01R33/34023 ,  G01R33/3815 ,  G01R33/387 ,  G01R33/3875

Abstract: A magnet apparatus for a magnetic resonance imaging system, the magnet apparatus includes a cylindrical vacuum vessel, a closed loop cooling system disposed within the vacuum vessel and a cylindrical thermal shield disposed between the vacuum vessel and the closed loop cooling system. A set of passive compensation coils are disposed within the vacuum vessel and used to compensate for magnetic field distortion caused by mechanical vibrations within the magnet apparatus.

Abstract translation: 一种用于磁共振成像系统的磁体装置，磁体装置包括圆柱形真空容器，设置在真空容器内的闭环冷却系统和设置在真空容器和闭环冷却系统之间的圆柱形热屏蔽。 一组无源补偿线圈设置在真空容器内，用于补偿由磁体装置内的机械振动引起的磁场畸变。

公开(公告)号：US20130154648A1

公开(公告)日：2013-06-20

申请号：US13690312

申请日：2012-11-30

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Weijun Shen ,  Timothy J. Havens ,  Longzhi Jiang ,  Tesfaye K. Kidane

IPC: G01R33/34

CPC classification number: G01R33/34092 ,  G01R33/3875 ,  G01R33/389 ,  G01R33/56509 ,  G01R33/56518

Abstract: A magnet apparatus for a magnetic resonance imaging system, the magnet apparatus includes a vacuum vessel, a helium vessel disposed within the vacuum vessel and a thermal shield disposed between the vacuum vessel and the helium vessel. A set of passive compensation coils are disposed within the vacuum vessel or the helium vessel and used to compensate for magnetic field distortion caused by mechanical vibrations within the magnet apparatus.

Abstract translation: 一种用于磁共振成像系统的磁体装置，磁体装置包括真空容器，设置在真空容器内的氦容器和设置在真空容器和氦容器之间的热屏蔽。 一组无源补偿线圈设置在真空容器或氦容器内，并用于补偿由磁体设备内的机械振动引起的磁场变形。