Doppler and Summary

• “Twinkling”
• Can improve detection of kidney stones

Narration

• ‘Aliasing’
• When speed is so fast it “wraps”
• Sudden shift – from blue to yellow
• Affected by scale – here >59 cm/s

Narration

• Lateral resolution (beam width)
• Elevational resolution (section thickness)
• Axial resolution
• Multipath
• Others

… be aware that things are not always as they appear!

Narration

Narration