BRIEF DESCRIPTION OF THE DRAWINGS
The invention, as well as further advantageous embodiments in accordance with features of the subclaims, are explained in greater detail below with reference to schematic exemplary embodiments in the drawing, without the invention being restricted by this to these exemplary embodiments; the figures show:
FIG. 1 a medical x-ray apparatus with an externally assigned medical navigation and positioning system;
FIG. 2 a display unit with an operating instrument shown in a first position and virtual target marks included on the display;
FIG. 3 a display unit with an operating instrument shown in a second position and virtual target marks included on the display;
FIG. 4 a view of a patient from above with x-ray marks arranged on them;
FIG. 5 a display unit with target marks defined by means of the x-ray markers included on the display;
FIG. 6 a further medical x-ray apparatus with an integrated medical navigation and positioning system.