A neuromodulation system includes a conductive element, a magnetic field generator, a power module and a computer processor. The conductive element located internal a patient's body. At least a portion of the conductive element is positioned adjacent to a target tissue. The magnetic field generator is positioned external to the patient's body. The magnetic field generator generates a time varying magnetic field for inducing stimulation of the target tissue in combination with the conductive element to produce stimulation that is larger than that which would occur in the absence of the conductive element. The power module supplies power to the magnetic field generator. The computer processor controls the time varying magnetic field provided by the magnetic field generator according to at least one set of stimulation parameters.