Generation of remote homogeneous magnetic fields

Author

Pulyer, Yuly M. ; Hrovat, Mirko I.

Author_Institution

Dept. of Radiol., Brigham & Women´´s Hosp., Boston, MA, USA

Volume

38

Issue

3

fYear

2002

fDate

5/1/2002 12:00:00 AM

Firstpage

1553

Lastpage

1563

Abstract

This paper presents a magnetic efficiency model for comparing efficiencies of various magnets for magnetic resonance imaging. It demonstrates that monohedral magnets, magnets with sources on one side, can generate remote saddle points in the field profile relatively efficiently. These magnets may be modeled by a minimum of two magnetic dipoles. The paper examines the field profile and magnetic dipole efficiency for the two-dipole model in detail, and develops some fundamental properties of homogeneous magnetic fields

Keywords

biomedical MRI; biomedical equipment; permanent magnets; solenoids; superconducting magnets; dipole efficiency; equivalent dipole; extrema maps; field profile; magnetic dipoles; magnetic efficiency model; magnetic resonance imaging; monohedral magnets; opposed coil; opposed permanent magnets; remote homogeneous magnetic fields generation; remote saddle points; solenoid magnet; split permanent magnet; split-coil; two-dipole model; Coils; Electromagnets; Energy efficiency; Life members; Magnetic fields; Magnetic properties; Magnetic resonance imaging; Magnets; Radiology; Solenoids;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.999131

Filename

999131