ARRANGEMENT AND METHOD FOR INFLUENCING AND/OR DETECTING MAGNETIC PARTICLES IN A REGION OF ACTION

摘要

An arrangement for influencing and/or detecting magnetic particles, and/or calibrating such an arrangement includes generating a magnetic selection field having a magnetic field strength pattern such that a first sub-zone having a low magnetic field strength and a second sub-zone having a higher magnetic field strength are formed in the region of action. A driver changes the position in space of the two sub-zones in the region of action by magnetic drive field so that the magnetization of the magnetic particles changes locally. The arrangement includes a drive signal chain, a detection signal chain, and a receiver for acquiring detection signals that depend on the magnetization in the region of action. The magnetization is influenced by the change in the position in space of the first and second sub-zones. A compensation controller provides a compensation signal to the drive signal chain and/or to the detection signal chain by a coupler.