发明名称 |
Efficiently shielded MRI gradient coil with discretely or continuously variable field of view |
摘要 |
A gradient coil assembly generates magnetic field gradients across the main magnetic field of a magnetic resonance imaging apparatus and includes a primary gradient coil (22p) switchable between a first configuration which generates magnetic field gradients which are substantially linear over a first useful imaging volume, and a second configuration which generates magnetic field gradients which are substantially linear over a second useful imaging volume. A first shield coil set (22s1) is complimentary to the primary gradient coil in one of the first and second configurations, and a second shield coil set (22s2), when either used alone or in combination with the first shield coil, is complimentary to the other of the first and second configurations.
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申请公布号 |
US6479999(B1) |
申请公布日期 |
2002.11.12 |
申请号 |
US20010874773 |
申请日期 |
2001.06.05 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
DEMEESTER GORDON D.;MORICH MICHAEL A.;SHVARTSMAN SHMARYU M. |
分类号 |
A61B5/055;G01R33/385;G01R33/3875;G01R33/421;(IPC1-7):G01V3/00 |
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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