Which component produces pulses for each electrical pulse applied and receives returning echo reflections, producing an electrical voltage?

Which component produces pulses for each electrical pulse applied and receives returning echo reflections, producing an electrical voltage?

• A. Transducer
• B. Receiver
• C. Display
• D. Cable

Answer: (A)

The transducer does both jobs: it converts electrical pulses into acoustic waves to probe the body, and it also converts the returning echoes back into electrical voltage that the system can process. When a short electrical pulse is applied, the piezoelectric crystals in the transducer vibrate to emit a sound wave. After echoes return, the same crystals are stimulated by the reflected energy and generate a small electrical voltage, which the ultrasound receiver then processes. The receiver’s role is to amplify and filter that signal, the display shows the image, and the cable just connects components.

The transducer does both jobs: it converts electrical pulses into acoustic waves to probe the body, and it also converts the returning echoes back into electrical voltage that the system can process. When a short electrical pulse is applied, the piezoelectric crystals in the transducer vibrate to emit a sound wave. After echoes return, the same crystals are stimulated by the reflected energy and generate a small electrical voltage, which the ultrasound receiver then processes. The receiver’s role is to amplify and filter that signal, the display shows the image, and the cable just connects components.