Title:
傾斜磁場コイル装置及び磁気共鳴イメージング装置
Document Type and Number:
Japanese Patent JP5894601
Kind Code:
B2
Abstract:
In a gradient magnetic field coil device including: a plurality of main coils generating in an imaging region of a magnetic field resonance imaging device a magnetic field distribution in which an intensity linearly inclines; and a plurality of shield coils, arranged on an opposite side of the imaging region across the main coils, suppressing residual magnetic field generated by the main coils on the opposite side. The plurality of main coils and the plurality of shield coils are connected in series. The device further includes a plurality of current adjusting devices, connected to the shield coils in parallel, independently adjusting currents flowing through the shield coils, respectively, to enhance symmetry of the residual magnetic field. The gradient magnetic field coil device is provided which can suppress generation of eddy current magnetic field even if there is a relative position deviation between the main coils and shield coils.
Inventors:
Yukinobu Imamura
Mitsushi Abe
Takeshi Yao
Terada Masanao
Tatsuya Ando
Takeshi Kawamura
Mitsushi Abe
Takeshi Yao
Terada Masanao
Tatsuya Ando
Takeshi Kawamura
Application Number:
JP2013532512A
Publication Date:
March 30, 2016
Filing Date:
August 10, 2012
Export Citation:
Assignee:
Hitachi Medical Co., Ltd.
International Classes:
A61B5/055; G01R33/385
Domestic Patent References:
| JP7163540A | ||||
| JP7178069A | ||||
| JP3289938A | ||||
| JP6189931A |
Attorney, Agent or Firm:
Isono Dozo
Etsuo Tada
Etsuo Tada