发明授权
- 专利标题： Magnetic resonance imaging apparatus and gradient magnetic field coil
- 专利标题（中）： 磁共振成像装置和梯度磁场线圈
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申请号： US12296719申请日： 2007-04-10
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公开(公告)号： US07852083B2公开(公告)日： 2010-12-14
- 发明人: Takeshi Yatsuo , Hiroyuki Takeuchi , Akira Kurome
- 申请人： Takeshi Yatsuo , Hiroyuki Takeuchi , Akira Kurome
- 申请人地址： JP Tokyo
- 专利权人： Hitachi Medical Corporation
- 当前专利权人： Hitachi Medical Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Cooper & Dunham LLP
- 优先权： JP2006-112473 20060414
- 国际申请： PCT/JP2007/057920 WO 20070410
- 国际公布： WO2007/119726 WO 20071025
- 主分类号： G01V3/00
- IPC分类号： G01V3/00
摘要：
An MRI apparatus excellent in magnetic field generation efficiency is provided. According to this invention, a main coil (52) of a gradient magnetic field coil (13) is partially recessed to reduce the total thickness of a radio-frequency coil (11) and a gradient magnetic field coil (13). That is, the main coil (52) is designed in a tubular shape, and the diameter r1 at the center portion of the imaging space is larger than the diameter r2 of the main coil end portion. Accordingly, the RF coil (11) can be disposed to be near to the gradient magnetic field coil (13) side without lowering the magnetic field generation efficiency.
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