As depth of view decreases, PRF ______.

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Multiple Choice

As depth of view decreases, PRF ______.

Explanation:
The number of pulses per second (PRF) is set by the time it takes for echoes from the deepest part of the area being imaged to return. The system must wait for those echoes before sending the next pulse to avoid overlap (range ambiguity). When depth decreases, the round-trip travel time becomes shorter, so the system can fire pulses more frequently, increasing PRF. Conversely, imaging deeper requires longer listening times, which lowers PRF. So, as depth of view decreases, PRF increases.

The number of pulses per second (PRF) is set by the time it takes for echoes from the deepest part of the area being imaged to return. The system must wait for those echoes before sending the next pulse to avoid overlap (range ambiguity). When depth decreases, the round-trip travel time becomes shorter, so the system can fire pulses more frequently, increasing PRF. Conversely, imaging deeper requires longer listening times, which lowers PRF. So, as depth of view decreases, PRF increases.

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