What does the term "transducer" refer to in sonography?

In sonography, the term "transducer" specifically refers to the device that emits and receives ultrasound waves. This critical component of an ultrasound system converts electrical energy into acoustic energy (ultrasound waves) and vice versa. When conducting an ultrasound examination, the transducer not only sends out sound waves into the body, but it also detects the echoes that are reflected back from structures such as organs or tissues.

The ability of the transducer to effectively send and receive these waves allows healthcare professionals to create real-time images of the internal structures. The transducer is essential for the formation of the ultrasound images, as it plays a fundamental role in the entire imaging process. Understanding the function of the transducer is key to grasping how sonography works as a diagnostic tool.