Doppler ultrasound is used to evaluate which of the following?

• A. Blood Flow in Vessels
• B. Tissue stiffness
• C. Bone density
• D. Air pockets

Answer: (A)

Doppler ultrasound assesses moving blood and flow in vessels by detecting frequency shifts that occur when sound waves bounce off moving red blood cells. This lets you see the direction, speed, and pattern of blood flow, which is essential for evaluating conditions like blockages, narrowed vessels, or abnormal flow.

Tissue stiffness is measured with elastography, not standard Doppler. Bone density is assessed with bone densitometry (for example, DXA). Air pockets interfere with ultrasound imaging, and ultrasound is not used primarily to detect air pockets. So the Doppler technique is best for evaluating blood flow in vessels.