A method and system for identifying a rotational orientation of an implanted electrical stimulation lead utilize radiological images of the lead. The lead has an asymmetric marker with a longitudinal band extending around a portion of the circumference of the lead. The method and system includes obtaining radiological images of the lead and using those images to determine a predicted rotational orientation of the lead. The predicted rotational orientation of the lead is then corrected based on at least one parameter of the imaging technique used to generate the image data.