Temperature pattern control within a monopole array used for interstitial microwave hyperthermia

Interstitial microwave hyperthermia has been used for the treatment of small-size liver tumors. Different liver tumors of various shapes and sizes have been treated by using monopole arrays with different temperature patterns. Generally different temperature patterns can be achieved through variation of the input power and the heating time. In this paper, a method to control the temperature pattern of the monopole array by changing the driving phase of the antennas is proposed.