公开(公告)号：US20130271145A1

公开(公告)日：2013-10-17

申请号：US13909564

申请日：2013-06-04

Applicant: KOREA RESEARCH INSTITUTE OF STANDARDS AND SCIENCE

Inventor： Seong-min HWANG ,  Kiwoong KIM ,  Jin Mok KIM ,  Yong-Ho LEE ,  Chan Seok KANG ,  Kwon Kyu YU ,  Seong-Joo LEE

IPC: G01R33/421

CPC classification number: G01R33/421 ,  A61B5/0046 ,  A61B5/055 ,  G01R33/445

Abstract: Provided are an apparatus and a method for canceling magnetic fields. The apparatus includes a magnetic field canceling coil disposed adjacent to an inner wall of a magnetic shield room to surround the entire inner space or a portion of an inner space of the magnetic shield room; and a magnetic field canceling coil driver to supply current to the magnetic field canceling coil. The magnetic field canceling coil cancels a prepolarization magnetic field established on the wall of the magnetic shield room by a prepolarization coil disposed in the center of the magnetic shield room to minimize magnetic interference caused by the magnetic shield room.

Abstract translation: 提供了一种抵消磁场的装置和方法。 该装置包括一个与磁屏蔽室的内壁邻接设置的磁场消除线圈，以围绕磁屏蔽室的整个内部空间或内部空间的一部分; 以及用于向磁场消除线圈提供电流的磁场消除线圈驱动器。 磁场消除线圈通过设置在磁屏蔽室的中心的预极化线圈抵消在磁屏蔽室的壁上建立的前极化磁场，以最小化由磁屏蔽室引起的磁干扰。