DEVICE FOR LOCALIZING, INFLUENCING AND GUIDING TRACKING BODIES, AND METHOD FOR OPERATING A MARKING DEVICE

摘要

The invention relates to a device for localizing tracking bodies ( 10 ), comprising at least one tracking body which is placed inside a physiological structure, and a means which is situated outside of the structure and which consists of sensor clusters ( 20 ) in a sensor cluster arrangement ( 55 ) as well as a method for localizing and influencing the tracking body. The tracking body is provided in the form of a body which is characterized by a finite remanent magnetization with a variable magnetic dipole moment and an anisotropic magnetic dipole field resulting therefrom. The sensor clusters ( 20 ) are provided in the form of a plurality of gradiometer sensors ( 30 ) with a specific measuring geometry. Optionally, physical/chemical properties and/or a trajectory of the tracking body may be altered in a specific manner by an externally acting magnetic field (H) and/or physiological processes in the environment of the at least one tracking body. In addition, it is possible to detect the location of a variable, in particular, a displaceable portion ( 57 ) which is associated with an expanded imaging means ( 60 ) of the sensor cluster arrangement ( 55 ) by means of a fixed portion ( 56 ) of the sensor cluster arrangement and to use the variable portion of the sensor cluster arrangement as a site marking in the expanded imaging arrangement.