What type of noise is associated with Doppler shift? 

What ultrasound method requires two active elements mounted side by side? 

A curving vessel within a color-flow image shows color in the vessel when the beam and vessel are parallel but shows no color, as the vessel turns perpendicular to the beam. The loss of color means that 

When the speed of fluid is constant across a vessel, the flow is called _________ flow.

In a stenosis, the pressure is ____________ the proximal and distal values.

If Doppler angle is doubled, the Doppler shift is 

Increasing the packet size of the color Doppler will decrease the:

Autocorrelation is the mathematical process commonly used to detect

Color-flow imaging in the peripheral vascular system typically uses 

The velocity of sound waves is primarily dependent on