Magnetic resonance imaging apparatus with regulator for reducing

Details Magnetic resonance imaging apparatus with regulator for reducing Magnetic resonance imaging apparatus with regulator for reducing

1991-09-18

1993-04-06

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324322, G01R 3320

Patent

active

052007014

ABSTRACT:
A magnetic resonance imaging apparatus for producing tomograms has a C-magnet with substantially planar pole faces for generating a magnetic field in the direction of the z-axis of a Cartesian coordinate system, for examining a human body having a body axis extending in the direction x-axis, the region to be examined being disposed between the pole pieces, gradient coils substantially parallel to the pole pieces, and a regulator for controlling the gradient currents of the gradient coils using the magnetic flux associated with each gradient coil as the measure value effecting such control. The gradient currents are adjusted dependent on disturbances in the magnetic flux which are caused by eddy currents and saturation effects in the ferromagnetic material in the proximity of the pole faces. Such a regulator can also be used in combination with gradient coils for generating a gradient in the z-direction for compensating for transient inhomogeneities in the main magnetic field.

REFERENCES:
patent: 4585995 (1986-04-01), Flugan
patent: 4703275 (1987-10-01), Holland
"Grundschaltungen" Beuth et al. Electronik 3, pp. 335-354.

Affiliated with

Also associated with

Rating

Magnetic resonance imaging apparatus with regulator for reducing does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Magnetic resonance imaging apparatus with regulator for reducing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic resonance imaging apparatus with regulator for reducing will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-539377