发明名称 |
Active resistive shimming for MRI devices |
摘要 |
Active resistive shim coil assemblies (208) may be used in magnet- ic resonance imaging (MRI) systems to reduce in-homogeneity of the magnetic field in the imaging volume. Disclosed embodiments may be used with continuous systems, gapped cylindrical systems, or verti- cally gapped systems. Disclosed embodiments may also be used with an open MRI system and can be used with an instrument (104) placed in the gap (102) of the MRI system. An exemplary embodiment of the active resistive shim coil assembly of the present disclosure includes active resistive shim coils each operable to be energized by separate currents through a plurality of power channels. In some embodiments, the disclosed active resistive shim coil assemblies allow for various degrees of freedom to shim out field in-homogeneity. |
申请公布号 |
AU2012363783(B2) |
申请公布日期 |
2017.03.02 |
申请号 |
AU20120363783 |
申请日期 |
2012.12.11 |
申请人 |
ViewRay Technologies, Inc. |
发明人 |
Shvartsman, Shmaryu M.;Dempsey, James F.;Demeester, Gordon |
分类号 |
G01R33/3875;G01R33/48 |
主分类号 |
G01R33/3875 |
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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