POSITION-DETERMINATION SYSTEM USING A MARKER, AND A MARKER FOR USE IN SUCH A SYSTEM

摘要

The invention concerns a position-determination system using at least one marker, and a marker for use in such a system. The markers (1) are novel in that their active transmission power - normally pulses of light or similar energy - is fed in by means of optical waveguides (3) so that no detectable electrical currents occur in the region of the marker (1). Patients therefore have optimum protection against undesirable electrical interference.