Which component receives, amplifies and modifies echo information returning from the transducer?

• A. Receiver
• B. Pulse Delays
• C. Demodulation
• D. Signal Processing

Answer: (A)

The main idea is that the echoes returning from tissue are handled by the receiving front end. The receiver is designed to detect those small electrical signals, amplify them to usable levels, and shape them for further processing and display. This shaping includes filtering and converting the high-frequency RF signal into a form (often via demodulation) that the rest of the system can readily process. So, the component that receives, amplifies, and modifies the echo information is the receiver.

Pulse delays relate to how signals are focused and steered across an array during reception, but they’re not the primary stage that handles the incoming echoes themselves. Demodulation is a function that occurs within the processing chain to extract usable information from the RF signal, and signal processing occurs after the signal has been conditioned by the receiver.