What is an advantage of continuous wave Doppler?

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Multiple Choice

What is an advantage of continuous wave Doppler?

Explanation:
Continuous wave Doppler can measure very high velocities accurately because it continuously transmits and receives, effectively removing the velocity aliasing that limits other methods. Since there’s no range-gated sampling, there’s no Nyquist constraint on velocity, so fast jets from valvular disease or stenosis can be quantified without aliasing. The trade-off is that you don’t get depth-specific information or an anatomical image—CW Doppler samples along the entire beam, so spatial localization is lost, and it doesn’t provide higher spatial resolution or definitive laminar/turbulent characterization. Therefore, its main advantage is accurate measurement of high velocity flow.

Continuous wave Doppler can measure very high velocities accurately because it continuously transmits and receives, effectively removing the velocity aliasing that limits other methods. Since there’s no range-gated sampling, there’s no Nyquist constraint on velocity, so fast jets from valvular disease or stenosis can be quantified without aliasing. The trade-off is that you don’t get depth-specific information or an anatomical image—CW Doppler samples along the entire beam, so spatial localization is lost, and it doesn’t provide higher spatial resolution or definitive laminar/turbulent characterization. Therefore, its main advantage is accurate measurement of high velocity flow.

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