Which device is used to convert electrical energy into mechanical energy for ultrasonic emission and reception?

Which device is used to convert electrical energy into mechanical energy for ultrasonic emission and reception?

• A. Transducer (probe)
• B. Monitor
• C. Gel pad
• D. Keyboard

Answer: (A)

The ultrasound transducer is the device that converts electrical energy into mechanical energy for emitting and receiving sound waves. It uses piezoelectric crystals that vibrate when an electrical current is applied, generating ultrasound waves that travel into the body. When echoes return, the same crystals convert the mechanical energy of the returning waves back into electrical signals for the system to process into an image. This dual capability—emission and reception—is why the transducer is the essential component here. Other items play different roles: the monitor displays the image, the gel pad helps couple sound into the body by removing air gaps, and the keyboard is just an input device.

The ultrasound transducer is the device that converts electrical energy into mechanical energy for emitting and receiving sound waves. It uses piezoelectric crystals that vibrate when an electrical current is applied, generating ultrasound waves that travel into the body. When echoes return, the same crystals convert the mechanical energy of the returning waves back into electrical signals for the system to process into an image. This dual capability—emission and reception—is why the transducer is the essential component here. Other items play different roles: the monitor displays the image, the gel pad helps couple sound into the body by removing air gaps, and the keyboard is just an input device.