A new design method for completely open architecture permanent magnet for MRI

Author

Yao, Yingying ; Fang, Youtong ; Koh, Chang Seop ; Ni, Guangzheng

Author_Institution

Coll. of Electr. Eng., Zhejiang Univ., China

Volume

41

Issue

5

fYear

2005

fDate

5/1/2005 12:00:00 AM

Firstpage

1504

Lastpage

1507

Abstract

A completely open magnet geometry satisfies the requirement of a MRI system for the surgical procedure. This paper presents a new flexible design method to facilitate the construction of a completely open MRI magnet by combining the magnetic dipole pair model and optimization algorithm. A numerical implementation shows that the method provides a main magnetic field with sufficient homogeneity and strength at the imaging region, which is defined outside of the magnet structure, and minimizes the cost of the MRI equipment.

Keywords

magnetic fields; magnetic moments; magnetic resonance imaging; optimisation; permanent magnets; MRI system; completely open MRI magnet; magnet geometry; magnetic dipole pair model; magnetic field; magnetic resonance imaging; optimization algorithm; permanent magnet; Computational geometry; Computer architecture; Design methodology; Educational institutions; Magnetic devices; Magnetic fields; Magnetic resonance imaging; Permanent magnets; Superconducting magnets; Surgery; Completely open MRI magnet; magnetic dipole; optimization; permanent magnet;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2005.845080

Filename

1430895