公开(公告)号：WO2008061371A1

公开(公告)日：2008-05-29

申请号：PCT/CA2007/002115

申请日：2007-11-23

Applicant: UNIVERSITY OF NEW BRUNSWICK ,  BALCOM, Bruce G. ,  COLPITTS, Bruce ,  MASTIKHIN, Igor V. ,  MARBLE, Andrew E.

Inventor： BALCOM, Bruce G. ,  COLPITTS, Bruce ,  MASTIKHIN, Igor V. ,  MARBLE, Andrew E.

IPC: G01R33/387 ,  H01F7/02

CPC classification number: G01R33/383 ,  G01N24/08 ,  G01N24/081 ,  G01R33/3808 ,  G01R33/5617 ,  H01F7/0284

Abstract: A magnet array is disclosed which is suitable for inter alia producing a remote field for use in unilateral magnetic resonance. In the "Magnet Array", two separated magnets, which are magnetized along a substantially same collinear magnetization direction, produce a field with a local maximum centered above and between them. The field produced by the two separated magnets is substantially parallel to the collinear magnetization direction of the two separated magnets. A third magnet is centered between the two separated magnets. The third magnet has a magnetization direction which is substantially parallel to the collinear magnetization direction of the two separated magnets. The third magnet produces a field which is substantially parallel to the collinear magnetization direction of the two separated magnets, and adds to the increasing field below the local maximum point produced by the two separated magnets. The field of the third magnet, which decays with distance, adds to the increasing field below the local maximum point. The position of the third magnet is selected in order to generate a total field which has at least one of its first and second spatial derivatives with respect to the distance above the magnet array substantially equal to zero.

Abstract translation: 公开了一种磁体阵列，其特别适用于制造用于单边磁共振的远场。 在“磁体阵列”中，沿着基本相同的共线磁化方向被磁化的两个分离的磁体产生具有以它们之上和之间的中心的局部最大值的场。 由两个分离的磁体产生的磁场基本上平行于两个分离的磁体的共线磁化方向。 第三个磁体位于两个分离的磁体之间。 第三磁体具有基本上平行于两个分离的磁体的共线磁化方向的磁化方向。 第三磁体产生基本上平行于两个分离的磁体的共线磁化方向的磁场，并且增加了由两个分离的磁体产生的局部最大点以下的增加磁场。 随着距离衰减的第三磁体的场增加了局部最大点以下的增加场。 选择第三磁体的位置以产生相对于磁体阵列上方的距离基本上等于零的至少一个第一和第二空间导数的总场。