3-D FEM Analysis of Residual Magnetism Produced by X-gradient Coil of Permanent Magnet Type of MRI

Author

Muraoka, A. ; Miyagi, D. ; Takahashi, N. ; Miyata, K. ; Ohashi, K.

Author_Institution

Dept. of Electr. & Electron. Eng., Okayama Univ.

fYear

0

fDate

0-0 0

Firstpage

436

Lastpage

436

Abstract

The detailed analysis of residual magnetization in permanent magnet type MRI is important for the improvement of MRI image. The behavior of residual magnetization produced by the z-gradient coil is already reported. As 3-D analysis is strictly required for investigating the residual magnetization produced by the x- or y-gradient coil, the report about such a behavior is few. In this paper, the minor loop and residual magnetization produced by the x-gradient coil in a 3-D model are examined. The useful knowledge for understanding the behavior of disturbance field due to the residual magnetization in the pole piece etc. is obtained

Keywords

coils; finite element analysis; magnetic resonance imaging; magnetisation; permanent magnets; 3D FEM analysis; MRI image; disturbance field; permanent magnet type MRI; residual magnetism; residual magnetization; x-gradient coil; y-gradient coil; z-gradient coil; Coils; Eddy currents; Image analysis; Magnetic analysis; Magnetic fields; Magnetic flux; Magnetic resonance imaging; Magnetization; Permanent magnets; Steel;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Field Computation, 2006 12th Biennial IEEE Conference on

Conference_Location

Miami, FL

Print_ISBN

1-4244-0320-0

Type

conf

DOI

10.1109/CEFC-06.2006.1633226

Filename

1633226