Acoustic imaging systems are provided. A preferred system includes a protective cover configured to mate with a transducer body. The transducer includes a two-dimensional transducer element matrix array formed by a plurality of individually controllable transducer elements. The protective cover is superposed...http://www.google.es/patents/US7135809?utm_source=gb-gplus-sharePatente US7135809 - Ultrasound transducer
