发明名称 |
System for magnetic field distortion compensation and method of making same |
摘要 |
A system and method for magnetic field distortion compensation includes a cryostat for a magnetic resonance imaging (MRI) system. The cryostat includes a vacuum casing having a vacuum therein. A cryogen vessel is disposed within the casing, the vessel having a coolant therein. A thermal shield is disposed between the vacuum casing and the cryogen vessel. An eddy current compensation assembly is disposed within the casing. The eddy current compensation assembly includes a plurality of electrically conductive loops formed on one of the vacuum casing, the cryogen vessel, and the thermal shield and constructed to mitigate vibration-induced eddy currents in the MRI system. |
申请公布号 |
US9322892(B2) |
申请公布日期 |
2016.04.26 |
申请号 |
US201213726278 |
申请日期 |
2012.12.24 |
申请人 |
General Electric Company |
发明人 |
Shen Weijun;Havens Timothy John;Jiang Longzhi;Saha Saikat;Gronemeyer Benjamin Jacob;Mogatadakala Venkata Kishore |
分类号 |
G01V3/00;G01R33/3875;G01R33/34;G01R33/565;G01R33/38;G01R33/3815 |
主分类号 |
G01V3/00 |
代理机构 |
Ziolkowski Patent Solutions Group, SC |
代理人 |
Ziolkowski Patent Solutions Group, SC |
主权项 |
1. A cryostat for a magnetic resonance imaging (MRI) system, the cryostat comprising:
a vacuum casing having a vacuum therein; a cryogen vessel disposed within the casing, the vessel having a coolant therein; a thermal shield disposed between the vacuum casing and the cryogen vessel; and an eddy current compensation assembly disposed within the casing, the eddy current compensation assembly comprising a plurality of electrically conductive loops formed on one of the vacuum casing, the cryogen vessel, and the thermal shield and constructed to mitigate vibration-induced eddy currents in the MRI system; wherein at least one surface of the one of the vacuum casing, the cryogen vessel, and the thermal shield has a first portion having the plurality of electrically conductive loops formed therein and a second portion free of the plurality of electrically conductive loops; and wherein the first portion has a thickness that is greater than a thickness of the second portion. |
地址 |
Schenectady NY US |