Pulse Repetition Frequency

Question 1

What describes PRF?

Answer 1

It controls the number of pulses emitted per unit of time

Question 2

Colour scale for a carotid exam?

Answer 2

30-40 cm/s

Question 3

Colour scale for cardiac exam?

Answer 3

60-80 cm/s

Question 4

Colour scale for venous exam?

Answer 4

< 20 cm/s

Question 5

What is the Nyquist limit?

Answer 5

The highest detectable DSF without aliasing

Question 6

When does aliasing occur?

Answer 6

When the highest DSF exceeds 1/2 of the PRF

Question 7

PRF is equal to?

Answer 7

2 x Nyquist limit

Question 8

Nyquist limit =

Answer 8

1/2 PRF