Patent ID: 8354841
Filing Date: 2013-01-15
Classification: A61B,A61K,B82Y,H01F

Abstract:
1. A method of influencing and detecting magnetic particles in a region of action the method comprising acts of: introducing the magnetic particles into the region of action, the magnetic particles including a shell region and a core region having a comparably high saturation magnetization; generating a magnetic selection field including a first sub-zone having a low magnetic field strength and a second sub-zone having a higher magnetic field strength in the region of action; superimposing a magnetic drive field on the magnetic selection field for changing the position in space of the first and second sub-zones in the region of action for changing magnetization of the magnetic particles; and acquiring signals dependent 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-zone, the signals from the magnetic particles in the first sub-zone are acquired in a higher frequency band than the magnetic drive field.