Question

Which of the following is an advantage of PW doppler over CW doppler?

A) Not limited by PRF
B) No aliasing
C) Ability to determine velocities at exact locations
D) Ability to evaluate deeper flow patterns

Answer 1

PW Doppler has advantages over CW Doppler, including the ability to determine velocities at exact locations, not being limited by PRF, and the ability to evaluate deeper flow patterns.

Step-by-step explanation:

PW (Pulsed Wave) Doppler has several advantages over CW (Continuous Wave) Doppler:

Ability to determine velocities at exact locations: PW Doppler allows for the measurement of blood flow velocities at specific depths within the body, which is useful for assessing flow patterns and identifying specific areas of concern.Not limited by PRF (Pulse Repetition Frequency): PW Doppler uses pulse intervals to measure blood flow velocities, allowing for higher PRF and avoiding the aliasing that can occur when using CW Doppler.Ability to evaluate deeper flow patterns: PW Doppler is capable of assessing blood flow at greater depths within the body, making it suitable for analyzing flow patterns in larger vessels or deeper tissues.

Answer 2

PW Doppler's main advantage over CW Doppler is its ability to measure blood flow velocity at specific points of interest within the vasculature.

Step-by-step explanation:

One advantage of Pulsed-Wave (PW) Doppler over Continuous-Wave (CW) Doppler is C) the ability to determine velocities at exact locations. PW Doppler allows for precise location measurement of blood flow, which is crucial when assessing blood flow in specific areas of interest within the body's vasculature. Beat frequency, which is the difference between the broadcast and received frequencies (FB = |f₁ - f₂|), is critical in both CW and PW Doppler techniques because it reflects the velocity of the moving reflector, such as blood cells.