1. A system for determining the three-dimensional position of implanted objects comprising: a computer system adapted to receive: a three dimensional ultrasound image of a region of implanted objects, and a plurality of two dimensional fluoroscopic images of the region of implanted objects; wherein said computer system is adapted to form from said three dimensional ultrasound image and said plurality of two dimensional fluoroscopic images an improved three dimensional image of the region of implanted objects, said improved three dimensional image capable of indicating the location of each object implanted in the region.