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. |
申请公布号 |
WO02099450(A3) |
申请公布日期 |
2005.02.03 |
申请号 |
WO2002US17832 |
申请日期 |
2002.06.04 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V.;PHILIPS MEDICAL SYSTEMS (CLEVELAND), INC. |
发明人 |
DEMEESTER, GORDON, D.;MORICH, MICHAEL, A.;SHVARTSMAN, SHMARYU |
分类号 |
A61B5/055;G01R33/385;G01R33/3875;G01R33/421 |
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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