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Table 3 Lowest detected flow velocity resulting in a continuous positive power Doppler ultrasound signal

From: Very different performance of the power Doppler modalities of several ultrasound machines ascertained by a microvessel flow phantom

Machine 2,000 μm vessel 1,000 μm vessel 150 μm vessel
A 4 2.22 11.1
B 0.005 0.06 0.11
C 1 0.56 1.68
D 1 0.56 Not detected
E 0.5 0.33 Not detected
  1. Flow velocity (mm/second).