Method and apparatus for reducing base field shifts in a magneti

Details Method and apparatus for reducing base field shifts in a magneti Method and apparatus for reducing base field shifts in a magneti

1989-03-30

1990-04-24

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

324322, G01R 3320

Patent

active

049203169

ABSTRACT:
A magnetic resonance imager/spectrometer including a main magnet having a bore axially formed therethrough in which a base field is formed. A gradient field forming means is positioned inside the bore of the main magnet for providing at least one axial field gradient inside the bore. An electrically conductive media in the main magnet surrounds the gradient coil and has eddy currents induced thereon via pulsing of the gradient field which generates a disturbing magnetic field along said same axis as said gradient field. A gradient position adjusting means, including an adjustable positioner, is used for adjusting the position of the gradient field forming means with respect to the bore of the main magnet in order to cause the center point of the axial magnetic fields of the electrically conductive media and the gradient field forming means to substantially coincide.

REFERENCES:
patent: 4093912 (1978-06-01), Double et al.
patent: 4644281 (1987-02-01), Savelainen
patent: 4673882 (1987-06-01), Buford
patent: 4733189 (1988-03-01), Punchard et al.
patent: 4761614 (1988-08-01), Prammer
patent: 4771244 (1988-09-01), Vermilyea
patent: 4783628 (1988-11-01), Huson
J. Phys. E.: Sci. Instrum., 19, (1986), "Passive Screening of Switched Magnetic Field Gradients", R. Turner et al., pp. 876-879.

Affiliated with

Also associated with

Rating

Method and apparatus for reducing base field shifts in a magneti does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for reducing base field shifts in a magneti, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for reducing base field shifts in a magneti will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-36085