发明名称 |
Gradient coil power supply and imaging method |
摘要 |
In a magnetic resonance imaging system in which the read and phase directions are rotated with respect to the orthogonal gradient coil directions, a gradient coil is driven to generate a gradient waveform having a segment, either sinusoidal or linear, that approximates the sum of the simultaneous non-zero components of the read and phase gradient waveforms in the direction of the gradient coil. Resonant circuits, each including a gradient coil, generate simultaneous periodic gradient coil waveforms in which the integral over each waveform period is non-zero. First and second capacitive elements in the resonant power supply are electrically connected to the gradient coil through a switch and a bridged network, respectively. The bridged network selectively provides current flow paths between the coil and either of the terminals of the second capacitive element.
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申请公布号 |
US5684402(A) |
申请公布日期 |
1997.11.04 |
申请号 |
US19950571640 |
申请日期 |
1995.12.13 |
申请人 |
ADVANCED NMR SYSTEMS, INC. |
发明人 |
ROHAN, MICHAEL L.;EVANS, ROBERT R. |
分类号 |
G01R33/385;G01R33/54;(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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