Comprehensive and Detailed Explanation From Exact Extract:
Continuous wave (CW) Doppler can measure very high velocities without aliasing because it does not have a Nyquist limit like pulsed-wave Doppler.
Principles and Instrumentation state:
"Aliasing is eliminated in continuous wave Doppler since it does not rely on sampling and has no upper velocity limit."
Output power (A) affects signal strength, not aliasing.
Higher frequency (B) increases aliasing susceptibility.
Decreasing PRF (C) actually worsens aliasing.
Therefore, the correct answer is D: Using continuous wave Doppler ultrasound.
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