What are the two components of pulsed ultrasound?

What are the two components of pulsed ultrasound?

• A. On-time and Off-time
• B. Transmit and Receive
• C. Emit and Detect
• D. Start and Stop

Answer: (B)

Pulsed ultrasound operates in an emit-and-listen cycle: the transducer emits a short pulse (transmit) and then switches to listening mode to detect the returning echoes (receive). This separation into emission and reception is what makes pulsed ultrasound able to measure depth—the time it takes for echoes to return corresponds to the distance from the transducer to reflecting structures. The two phases work together to form the image: a burst of energy is sent, then the system waits and listens for reflections before sending the next burst. Other pairings don’t capture this functional duet between sending energy and listening for echoes, which is why transmit and receive is the best fit.

Pulsed ultrasound operates in an emit-and-listen cycle: the transducer emits a short pulse (transmit) and then switches to listening mode to detect the returning echoes (receive). This separation into emission and reception is what makes pulsed ultrasound able to measure depth—the time it takes for echoes to return corresponds to the distance from the transducer to reflecting structures. The two phases work together to form the image: a burst of energy is sent, then the system waits and listens for reflections before sending the next burst. Other pairings don’t capture this functional duet between sending energy and listening for echoes, which is why transmit and receive is the best fit.