At the same time to exert influence on the magnetic grain inside the operation field and at the same time/or on the magnetic grain inside the device and

摘要

Method for detecting the particles and / or affect the magnetic particles in the working region and methods for calibrating a device for detecting the particles and / or affect the magnetic particles, and such devices are disclosed. The working area, the apparatus generates a selection magnetic field having a spatial pattern of magnetic field strength and the part the second section having a subsection of the first with a low field strength, a higher magnetic field strength as formed selecting means for magnetization of the magnetic particles so as to change locally, by the driving magnetic field, and a driving means for changing the spatial position of the partial sections of the two of the working area, driving the device has a drive signal chain means, a receiving means for collecting the detection signals that depend on the magnetization of the working area affected by the changes in the spatial position of the partial first and second compartments, and having a receiving means that the device has a detection signal chain then, and, to have a compensation controller supplies a compensation signal to the detection signal chain and drive signal chain and / or by coupling means.