A medical device suitable for delivery of energy to tissue includes a housing, a phased antenna array disposed within the housing, and a user-interface coupled to the housing. The user-interface is adapted to enable a user to selectively adjust the radiation pattern of electromagnetic energy delivered into a tissue region by the phased antenna array. The medical device also includes an ultrasound transducer array disposed within the housing. The ultrasound transducer array is configured to acquire data representative of the tissue region during energy delivery into the tissue region by the phased antenna array.
