发明名称 |
Open MRI magnet with superconductive shielding |
摘要 |
An open magnetic resonance imaging (MRI) magnet having two generally toroidal-shaped superconductive coil assemblies spaced apart by generally spaced-apart and generally parallel inter-coil-assembly posts. Each coil assembly has associated with it a generally annular-shaped superconductive shielding assembly and at least two spaced-apart assembly posts each having one end attached to the coil assembly and another end attached to the shielding assembly The shielding coil within the shielding assembly has an inner diameter greater than the outer diameter of the main coil within the coil assembly. A cryocooler coldhead cools the entire magnet. Magnetic shielding is achieved while maintaining the openness of the open magnet.
|
申请公布号 |
US5448214(A) |
申请公布日期 |
1995.09.05 |
申请号 |
US19940260433 |
申请日期 |
1994.06.15 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
LASKARIS, EVANGELOS T. |
分类号 |
A61B5/055;G01R33/38;G01R33/3815;G01R33/421;H01F6/00;H01F7/20;(IPC1-7):H01F6/00 |
主分类号 |
A61B5/055 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|