Shielding stray magnetic fields of open high field MRI magnets

被引：0

作者：

Kakugawa, S

Hino, N

Komura, A

Kitamura, M

Takeshima, H

Yatsuo, T

Tazaki, H

机构：

[1] Hitachi Ltd, Hitachi Res Lab, Hitachi, Ibaraki 3191292, Japan

[2] Hitachi Med Corp, R&D Ctr, Kashiwa, Chiba 2770804, Japan

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2004年 / 14卷 / 02期

关键词：

linear programming; magnetic resonance; imaging (MRI); multipole stray field; optimization;

D O I：

10.1109/TASC.2004.831023

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We have developed a new magnet for open high field (0.7 T) MRI systems. Since MRI systems are installed in hospital sites, it is important to reduce stray magnetic fields of the magnets. We studied passive, active and hybrid shielding methods and compared them. In order to study feasibility of active shielding, we considered higher order multipole stray fields. We present details of the calculation method and the results.

引用

页码：1639 / 1642

页数：4

共 7 条

[1] AN OPTIMAL-DESIGN TECHNIQUE FOR MRI SUPERCONDUCTING MAGNETS USING MATHEMATICAL-PROGRAMMING METHOD [J].