In ultrasonography, a lens used to focus or diverge a sound beam; may be simulated by electronic manipulation of signals. ... (05 Mar 2000) ... 
Type: Term Definitions: 1. in ultrasonography, a lens used to focus or diverge a sound beam; may be simulated by electronic manipulation of signals.
acoustic lens In ultrasonography, a lens used to focus or diverge a sound beam which may be simulated by electronic manipulation of signals.