In one example, a device includes a telemetry module configured to retrieve graphics processing data from a device that is not configured to perform a rendering process using the graphics processing data and that is associated with delivering therapy to a therapy target of a patient, and a control unit configured to apply the graphics processing data while performing the rendering process to generate an image of an anatomical feature of the patient, wherein the anatomical feature comprises the therapy target for an implantable medical device, and to cause a display unit of a user interface to display the image, wherein the image of the anatomical feature is specific to the patient. The graphics processing data may include a list of vertices or a transform to be applied to a non-patient-specific anatomical atlas. The data may also include a location of a therapy element of the implantable medical device.