Ch.4 Pulse Repitition Frequency (PRF)

What is PRF?

number of pulses that an ultrasound machine transmits into the body each second

What is meaningless in regards to PRF?

the number of cycles in each pulse

What is focused on during PRF?

the number of pulses created each second

What units represent PRF?

HZ per second

What are the typical values of PRF?

1,000- 10,000 Hz or 1-10 thousand pulses per second

What is PRF determined by?

sound source only (Transducer)

PRF is determined by the maximum what?

imaging depth of the system

Is PRF adjustable?

yes

How is PRF adjusted by the sonographer?

adjusting the depth of view of a scan

When system imaging is shallow, the PRF is what?

higher

When the system imaging is deeper, the PRF is what?

lower

PRF is unrelated to what?

frequency

What is PRF only related to?

depth of view

PRF and depth of view are related how?

inversely

as depth of view increases, PRF what?

decreases

As depth of view decreases, PRF what?

increases

How are PRF and PRP related?

inversely/reciprocal

a longer PRP results in a what PRF?

lower

A shorter PRP results in a what PRF?

higher