Carotid ultrasonography is an ultrasound

Ultrasound

Ultrasound is cyclic sound pressure with a frequency greater than the upper limit of human hearing. Ultrasound is thus not separated from "normal" sound based on differences in physical properties, only the fact that humans cannot hear it. Although this limit varies from person to person, it is...

-based diagnostic imaging technique to reveal structural details of the carotid arteries, so as to look for blood clots, atherosclerotic plaque buildup, and other blood flow problems.

A carotid duplex is a carotid ultrasonography carried out by duplex ultrasonography. A duplex carotid ultrasound may include a Doppler ultrasound, a special test able to reveal the movement of blood cells through the carotid arteries.

See also

• Medical ultrasonography
  Medical ultrasonography
  Diagnostic sonography is an ultrasound-based diagnostic imaging technique used for visualizing subcutaneous body structures including tendons, muscles, joints, vessels and internal organs for possible pathology or lesions...
  
  
• What Is Carotid Ultrasound? by NHLBI