Title :
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
fDate :
5/1/2002 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
