Fig. 4

Guidewire insertion using real-time 3D fluoroscopic navigation (a). The surgeon is able to insert the guidewire while looking at the real-time image in the AP (b) or bull’s eye view (c), which is overlaid with the trajectory of the guidewire insertion planned in 3D images. The guidewire is at the center point of the bull’s eye view, with the tip and back end of the guidewire overlapping and located in the center of the circle and cross (c)