1. A method comprising: receiving, by a system comprising a processor, information comprising a location of a lead in a patient's body; determining, by the system, a theoretically-optimal location for a moveable contact within the lead that maximizes a clinical effect of stimulating the tissue based on a patient-specific computer model and the location of the lead, wherein the patient-specific computer model is created based on one or more imaging studies; and providing an instruction to an actuator of the lead to move the moveable contact from a first position to a second position representing the theoretically-optimal location, wherein the actuator is in operable communication with at least one of a first lead body and a second lead body of the lead to cause sliding relative movement between the lead bodies, which results in movement of the moveable contact from the first position to the second position.