What part of PRP changes with different imaging depths?

The part of the Pulse Repetition Period (PRP) that changes with different imaging depths is the listening/off/receiving time. As imaging depth increases, the time it takes for the ultrasound pulse to travel to the tissue and back to the transducer also increases. This is because the sound waves must cover a greater distance, which extends the duration of the listening time.

In ultrasound imaging, after the pulse is transmitted, there is a necessary delay required for the system to switch from sending to receiving mode, during which the transducer waits to detect the returning echoes. This waiting period is reflected in the listening/off/receiving time, which becomes longer at greater depths, directly affecting the total PRP. Understanding this relationship is crucial, as it highlights how the system is designed to accommodate varying imaging depths while ensuring accurate timing and data collection.