Ultrasound transceiver and uses thereof

A dual use ultrasonic transceiver device for combined sensing and power transmission, the power transmission for thermal tissue damage, comprising:

• a first piezoelectric transceiver sized for placement in a body lumen;
• a power unit which provides power to said transducer suitable for generating an ultrasonic power beam for thermal tissue damage in a tissue damage region;
• and
• a sensing unit which receives ultrasonic signals for sensing at said tissue damage region
• wherein said first piezoelectric transceiver is mounted on a mounting and wherein said mounting comprising mechanical damping for said piezoelectric surface, the mounting being configured such as to provide a first region of said piezoelectric surface with a first relatively high level of mechanical damping and a second region of said piezoelectric surface with a second relatively low level of mechanical damping, said damping levels being selected to enable said ultrasonic sensing from said first region and said power transmission from said second region.