Medical devices and methods for using the same to treat tissue near a body passageway are disclosed. An apparatus includes a catheter (120, 130) having a plurality of electrodes, a radiofrequency energy generator and a controller for coupling the energy generator to the plurality of electrodes and configured to selectively energize the electrodes. The method includes using the apparatus to subject the tissue near the body passageway to a plurality of energy treatment cycles. The treatment cycle includes determining desired voltages for at least a subset of the electrodes to maintain a predetermined target temperature profile proximate the subset of electrodes, setting an output voltage of the energy generator to correspond to the desired voltage determined for one of the electrodes and energizing at least some of the electrodes at the output voltage to deliver energy to the body passageway.
