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電磁石装置及び磁気共鳴撮像装置
专利权人:
株式会社日立製作所
发明人:
阿部 充志,渡邊 洋之,竹島 弘隆
申请号:
JP2011193212
公开号:
JP5145451B2
申请日:
2011.09.05
申请国别(地区):
JP
年份:
2013
代理人:
摘要:
PROBLEM TO BE SOLVED: To provide a downsized/lightweight electromagnetic apparatus and magnetic resonance imaging apparatus by removing unnecessary constitution as much as possible in the electromagnet apparatus generating a static magnetic field perpendicularly to the insertion direction of a subject.SOLUTION: The electromagnet apparatus includes a first coil (31) in which a first ring current (J1) circulates in a forward direction, a second coil (32) in which a second ring current (J2) circulates in an inverse direction, and coil group (30) in which a plurality of ring currents (J3-J6) circulates alternately in the forward direction and the inverse direction. The first coil (31), the second coil (32) and the coil group (30) are disposed in such a way that elevation angles θ increase in this order (θ1<θ2<θ3). Also, a blank area (S) which does not include the second coil (32) and the coil group (30) is present in an angle area holding the elevation angle θ2 and the elevation angle θ3. Further, the outermost area of a magnetic field adjusting part (14) for distributing a magnetic material arbitrarily in a plane crossing the central axis (Z) at right angle and adjusting the magnetic distribution in a uniform region (U) of the magnetic field is disposed to be included in the blank area (S).
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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