TRACKERS FOR OPTICAL NAVIGATION OF IMAGE-GUIDED TOOLS

摘要

A tracking apparatus for optical navigation of image-guided tools is provided with the apparatus comprising a plurality of reflectors (2) attached to the subject of tracking (1) and at least one tracking unit (4) having means for emitting and receiving radiation (5) and being adapted to determine the position of the subject of tracking (1) by bouncing tracking radiation (5) on the reflectors (2). The apparatus also comprises an enclosure (3) adapted to enclose the plurality of reflectors (2) and being made of shielding material essentially transparent to the tracking radiation (5).