发明名称 |
Inspection apparatus using magnetic resonance |
摘要 |
An inspection apparatus using magnetic resonance includes magnetic field generators for generating a static magnetic field, a gradient magnetic field and a radio frequency magnetic field, respectively, a signal detector for detecting magnetic resonance signals from an inspected object, a computer for executing arithmetic operations for detection signals from the signal detector and an output device of the result of the arithmetic operations by the computer. The gradient magnetic field generator includes first and second gradient coils, the first gradient coil is a coil fixed to a magnet for generating a static magnetic field, the second gradient coil is a movable coil, and the magnetic field generated by the second gradient coil at a conducting portion of the magnet is offset by the magnetic field generated by the first gradient coil. According to this construction, an eddy current that occurs with the time change of the gradient magnetic field can be reduced.
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申请公布号 |
US5600245(A) |
申请公布日期 |
1997.02.04 |
申请号 |
US19940319724 |
申请日期 |
1994.10.07 |
申请人 |
HITACHI, LTD.;HITACHI MEDICAL CORPORATION |
发明人 |
YAMAMOTO, ETSUJI;OCHI, HISAAKI;ITAGAKI, HIROYUKI;ONODERA, YUKARI;TAKEUCHI, HIROYUKI |
分类号 |
G01R33/385;G01R33/565;(IPC1-7):G01V3/00 |
主分类号 |
G01R33/385 |
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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