'Emisonic 4264' handheld revolving ultrasound transducer, 1979.
© Science Museum / Science & Society Picture Library
Made by Nuclear Enterprises Ltd, Edinburgh. An ultrasound transducer is a device which can produce ultrasound by converting electrical into mechanical energy, and detect ultrasound by converting mechanical into electrical energy. In ultrasound instruments, the transducer has a dual function; it acts both as a transmitter of the ultrasound beam, and as a receiver of the ultrasound echoes. Ultrasound transducers, often called probes, come in different shapes and sizes for use in different scanning situations.