Verfahren und Vorrichtung zur Magnetresonanzuntersuchung

摘要

In a process for magnetic resonance examination, in particular nuclear spin tomography, a static magnetic field is generated in an examination chamber and at least two substantially perpendicular gradient magnetic fields controlled by a sequence signal are superimposed on the static magnetic field, causing unwanted alternating electromagnetic forces to appear. The sequence signal for at least one gradient magnetic field is analogically or digitally filtered over a broad band, adaptively filtered and/or adaptively filtered in a weighted manner by means of an adaptation algorithm. Also disclosed is a device for magnetic resonance examination, in particular nuclear spin tomography, with first static magnetic field generating means, at least two devices (21, 31) for generating the gradient magnetic field which generate perpendicular gradient magnetic fields, and a common sequence generator (11) for driving the gradient magnetic field generators (21, 31). An analogue, digital and/or adaptive and weighting filter (33) is connected upstream of at least one gradient magnetic field generator (31).