发明授权
- 专利标题： Magnetic pole magnet device using the magnetic pole, and magnetic resonance imaging apparatus
- 专利标题（中）： 使用磁极的磁极磁体装置和磁共振成像装置
-
申请号： US10468793申请日： 2002-02-27
-
公开(公告)号： US06937017B2公开(公告)日： 2005-08-30
- 发明人: Shigeru Kakugawa , Yoshihide Wadayama , Hirotaka Takeshima , Takeshi Yatsuo , Kenji Sakakibara
- 申请人： Shigeru Kakugawa , Yoshihide Wadayama , Hirotaka Takeshima , Takeshi Yatsuo , Kenji Sakakibara
- 申请人地址： JP Tokyo JP Tokyo
- 专利权人： Hitachi, Ltd.,Hitachi Medical Corporation
- 当前专利权人： Hitachi, Ltd.,Hitachi Medical Corporation
- 当前专利权人地址： JP Tokyo JP Tokyo
- 代理机构： Mattingly, Stanger, Malur & Brundige, P.C.
- 优先权： JP2001-58481 20010302
- 国际申请： PCT/JP02/01826 WO 20020227
- 国际公布： WO02/07194 WO 20020919
- 主分类号： A61B5/055
- IPC分类号： A61B5/055 ; G01R33/383 ; G01R33/387 ; H01F6/00 ; G01V3/00
摘要：
The present invention is intended to provide a magnetic pole, a magnet apparatus, and a magnetic resonance imaging apparatus that the magnetic structure of the magnet apparatus for generating a uniform magnetic field is formed in a lower burst mode, and the profitability is increased, and at the same time, the uniformity of the magnetic field is improved.According to the present invention, the magnetic poles arranged opposite to each other across a measuring space have at least one of a plurality of hollows and a single hollow having a shape continuously changing on the section perpendicular to the direction of the magnetic field formed in the measuring space and particularly in order to make the magnetic field uniform, the arrangement of the plurality of hollows and the shape of the single hollow are adjusted. The magnet apparatus and magnetic resonance imaging apparatus of the present invention are structured as mentioned above.