发明名称 |
MAGNETIC FIELD CORRECTION METHOD, MAGNETIC FIELD FORMING DEVICE AND MAGNETIC RESONANCE IMAGING UNIT |
摘要 |
PROBLEM TO BE SOLVED: To realize a method for the efficient correction of the second-order term components of the magnetostatic field, an apparatus which forms the magnetostatic field with the second-order term components efficiently corrected and a magnetic resonance imaging device with the magnetic field forming device thus arranged. SOLUTION: In the correction of the uneven errors in the magnetostatic fields which are formed by a pair of magnets (102) supported with yokes (202 and 204) facing each other sandwiching a space, the second-order term components of the magnetostatic fields are corrected by the second-order term components of the magnetic fields generated with a pair of circular coils (104) and the zero-order term components of the magnetic fields with the pair of circular ring coils are compensated for by the zero-order term components of the magnetic field generated with a coil (114) wound on the yoke (204). COPYRIGHT: (C)2004,JPO
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申请公布号 |
JP2004081493(A) |
申请公布日期 |
2004.03.18 |
申请号 |
JP20020246401 |
申请日期 |
2002.08.27 |
申请人 |
GE MEDICAL SYSTEMS GLOBAL TECHNOLOGY CO LLC |
发明人 |
GOTO TAKAO |
分类号 |
A61B5/055;G01R33/383;G01R33/3875;H01F7/20;(IPC1-7):A61B5/055;G01R33/387 |
主分类号 |
A61B5/055 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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