公开(公告)号：US06377048B1

公开(公告)日：2002-04-23

申请号：US09707905

申请日：2000-11-08

申请人： Erez Golan ,  Aharon Blank ,  Gil Alexandrowicz

发明人： Erez Golan ,  Aharon Blank ,  Gil Alexandrowicz

IPC分类号： G01V300

CPC分类号： G01R33/3873

摘要： An MRI system is presented utilizing a magnetic assembly of a kind which, when accommodated within a primary static reasonably homogeneous magnetic field created by the MRI system affects the static magnetic field to cause creation of a region of substantial non-homogeneity of the static magnetic field in the vicinity of the magnetic assembly. By this, a local static field gradient is created. The magnetic assembly comprises a passive magnetic element, which deforms a pattern of the static magnetic field, while not being a magnetic field source by to itself.

摘要翻译： 使用一种磁性组件来呈现MRI系统，其在容纳在由MRI系统产生的主要静态合理均匀的磁场内时会影响静态磁场，从而产生静态磁场的实质上非均匀性的区域 在磁性组件附近。 由此，创建本地静态场渐变。 磁性组件包括一个被动磁性元件，它使静态磁场的图形变形，而不是一个磁场源自身。

公开(公告)号：US06704594B1

公开(公告)日：2004-03-09

申请号：US09705732

申请日：2000-11-06

申请人： Aharon Blank ,  Gil Alexandrowicz ,  Erez Golan

发明人： Aharon Blank ,  Gil Alexandrowicz ,  Erez Golan

IPC分类号： A61B505

CPC分类号： G01R33/3808

摘要： An imaging probe and method and an MRI system utilizing the same are presented. The probe comprises first and second magnetic field sources, and a receiver of NMR signals. The first magnetic field source creates a primary, substantially non-homogeneous, static magnetic field in a region of interest in a medium outside the probe. The second magnetic field source creates an external time-varying magnetic field, which when being applied to the region of the static magnetic field, is capable of exciting nuclei in an extended sub-region of this region and generating the NMR signals.

摘要翻译： 提出了一种成像探针和方法以及利用其的MRI系统。 探头包括第一和第二磁场源以及NMR信号的接收器。 第一磁场源在探针外部的介质中在感兴趣的区域中产生初级的，基本上非均匀的静态磁场。 第二磁场源产生外部时变磁场，当被施加到静态磁场的区域时，能够激发该区域的扩展子区域中的核并产生NMR信号。