In this window, the user visualizes the position of the electrode trajectory with respect to the artifacts of the MR or CT images. Lead-DBS places within these artifacts the built-in templates for the electrodes, represented as straight lines that run along the artifacts. The contacts are represented as a set of circles on the electrode lead lines (4 or 8 circles, depending on the electrode model chosen). First, the user adjusts the position of the right electrode, then the left electrode for a bilaterally implanted patient.