Patent ID: 8044660

Claim:
An arrangement for influencing and/or detecting magnetic particles in a region of action, wherein the arrangement comprises: a generator configured to generate a magnetic selection field having a pattern in space of its magnetic field strength 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 configured to change a position in space of the two sub-zones in the region of action by a magnetic drive field so that the magnetization of the magnetic particles changes locally, the arrangement comprising a drive signal chain; a receiver configured to acquire detection signals, which detection signals depend on the magnetization in the region of action, wherein the magnetization is influenced by the change in the position in space of the first sub-zone and second sub-zone, the arrangement comprising a detection signal chain; and a compensation controller configured to provide a compensation signal to the drive signal chain and/or to the detection signal chain by at least one of a resistive coupling and an inductive coupling.