APPARATUS AND METHOD FOR TREATING MULTIPLE TUMORS IN PATIENTS WITH METASTATIC DISEASE BY ELECTRIC FIELDS

An electronic device for delivering a plurality of tumor treating electromagnetic fields to a patient including a plurality of electrode elements each being independently programmable, a control device and a field generator. The control device is configured to dynamically program a frequency range, a firing configuration and a firing sequence for the plurality of electrode elements. The field generator generates electrical signals in the frequency range, the electrical signals being directed to at least two of the plurality of electrode elements. The plurality of electrode elements including both master and slave electrode elements.