-
公开(公告)号:US20050001621A1
公开(公告)日:2005-01-06
申请号:US10898182
申请日:2004-07-26
申请人: Evangelos Laskaris , Xianrui Huang , Michele Ogle
发明人: Evangelos Laskaris , Xianrui Huang , Michele Ogle
IPC分类号: A61B5/055 , G01R33/3815 , G01V3/00
CPC分类号: G01R33/3815
摘要: A magnetic resonance imaging (MRI) device for imaging a volume is provided with at least one main magnet for generating a magnetic field, and at least one gradient coil for manipulating the magnetic field generated by the at least one main magnet to image the volume. The magnetic fields generated by the at least one gradient coil are substantially unshielded.
摘要翻译: 用于对体积成像的磁共振成像(MRI)装置设置有至少一个用于产生磁场的主磁体,以及至少一个梯度线圈,用于操纵由至少一个主磁体产生的磁场以对体积进行成像。 由至少一个梯度线圈产生的磁场基本上是非屏蔽的。
-
公开(公告)号:US06181137B2
公开(公告)日:2001-01-30
申请号:US09360712
申请日:1999-07-26
申请人: Timothy John Havens , Xianrui Huang , Robert Sethfield Smith , Steven Ho-Chong Wong , Michele Ogle , Bu-Xin Xu , Minfeng Xu
发明人: Timothy John Havens , Xianrui Huang , Robert Sethfield Smith , Steven Ho-Chong Wong , Michele Ogle , Bu-Xin Xu , Minfeng Xu
IPC分类号: G01V300
CPC分类号: G01R33/387
摘要: A method for shimming a magnetic resonance imaging magnet requiring higher magnetic field homogneity on a small imaging volume and by magnetic field measurements on a larger volume providing small measurement error and practical field strength measurements and utilizing the spherical harmonic coefficients of the measurements.
摘要翻译: 一种用于对在小成像体积上需要较高磁场均匀性的磁共振成像磁体进行匀场的方法以及通过较大体积的磁场测量来提供小的测量误差和实际的场强度测量并利用测量的球谐函数。
-