A method for operating an imaging device for the monitoring of an anatomical region during insertion of metallic objects or objects made at leat partly of metal inside the said region, which metallic objects disturb standard tracking systems. The method is based on acquisition of image data by two different imaging systems, one of which is capable of high resolution and the other of real time imaging, registering the images of the two imaging systems and using the high resolution system for imaging the anataomic district while the real time imging system for imaging the metallic object to be introduced in the said anatomic district.The invention relates also to an imaging apparatus for performing such method.
