Low eddy current and low hysteresis magnet pole faces in MR imag

Details Low eddy current and low hysteresis magnet pole faces in MR imag Low eddy current and low hysteresis magnet pole faces in MR imag

1998-08-31

2000-11-21

Arana, Louis

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

324320, G01V 300

Patent

active

061508187

ABSTRACT:
Pole faces for an open magnetic resonance (MR) imaging system are constructed from a number of blocks having laminate sheets. The laminate sheets of the blocks are aligned, such that they are parallel to the flux of an applied time-changing magnetic field. Each laminate sheet is constructed of an amorphous material such that there is no predominant magnetic field alignment. This construction reduces eddy currents induced in the pole faces, and reduces residual magnetization, thereby reducing artifacts in an acquired image.

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