Patent Number: 6,396,272

Title: Method of cancelling lorentz force-produced oscillations in a gradient tube, and magnetic resonance imaging apparatus operating according to the method

Abstract: In a method for the operation of a magnetic resonance apparatus having at least one gradient coil and elements for generating a force acting on the gradient tube, with which natural oscillation modes of the gradient tube are excited, so as to oppose oscillations of the gradient tube produced by Lorentz forces, drive signals are supplied for the excitation of the elements, and the amplitudes and/or the phases of the drive signals are varied for adjusting the force generated by the elements and acting on the gradient tube so as to compensate modifications of the oscillatory behavior of the gradient tube. The drive signals are varied dependent on at least one measured value representing a criterion for the change of the oscillatory behavior.

Inventors: Dietz; Peter (Nuremberg, DE), Arz; Winfried (Erlangen, DE), Roeckelein; Rudolf (Erlangen, DE)

Assignee: Siemens Aktiengesellschaft

International Classification: G01R 33/38 (20060101); G01R 33/385 (20060101); G01V 003/00 ()

Expiration Date: 05/28/2019