公开(公告)号：US06570475B1

公开(公告)日：2003-05-27

申请号：US09716765

申请日：2000-11-20

申请人： Yuri Lvovsky ,  Robert E. Wilcox ,  A. Kamal Kalafala ,  Leo Blecher

发明人： Yuri Lvovsky ,  Robert E. Wilcox ,  A. Kamal Kalafala ,  Leo Blecher

IPC分类号： G01V300

CPC分类号： G01R33/421 ,  G01R33/3815

摘要： An MRI magnet assembly includes a pair of cryostat enclosures each housing a superconducting primary shield coil. The primary shield coil is dimensioned with an outer diameter greater than that of the main coil and is axially spaced away from the magnet pole significantly farther than is the main coil. This design provides for increased accessibility and visibility within the gap defined between the cryostat enclosures, and allows for reduced amounts of superconducting material in the coils. A set of field shaping coils is mounted radially inwardly and closely axially adjacent to the magnet pole and axially between the main coil and the shield coil.

摘要翻译： MRI磁体组件包括一对低温恒温箱，每个低温恒温箱容纳超导主屏蔽线圈。 主屏蔽线圈的尺寸设计大于主线圈的外径，并且与主线圈相比远离磁极轴向间隔开。 该设计提供了在低温恒温箱之间限定的间隙内增加的可接近性和可视性，并允许在线圈中减少量的超导材料。 一组场整形线圈径向向内和紧密地轴向地安装在磁极附近并且在主线圈和屏蔽线圈之间轴向安装。