In module Image Comparison 2D, two or more findings of the same image type can be compared numerically and graphically. The numerical comparison is provided as a tabular comparison of the cephalometric measurement values of the selected analysis with or without clinical norms. The graphic comparison can be done as a superimposition of the tracing, as a segmented overlay and as a superimposition of harmony boxes. The tracings can be superimposed at reference points or (by means of gray value correlation) on growth-stable skeletal structures.