Doppler Settings

Doppler Settings

• Set the Doppler angle ≤ 60° for accurate velocity measurements
• Align the Doppler cursor parallel to blood flow
• Adjust sample gate size to match vessel lumen (not too wide or narrow)
• Optimize PRF (Pulse Repetition Frequency) to avoid aliasing
• Use wall filter to remove low-frequency motion artifacts
• Balance color gain to avoid over- or under-saturation of the flow signal
• Set appropriate scale for expected flow velocities
• Use baseline shift to reduce aliasing when high velocities are present
• Ensure spectral Doppler waveform is clear with sharp envelope
• Adjust sweep speed for better display of waveforms (slower for detail, faster for rhythm)