A Doppler ultrasound (or duplex scanning) is a medical test that uses reflected sound waves to estimate the speed and direction of blood as it flows through a blood vessel. It helps doctors evaluate blood flow through arteries and veins.
Doppler ultrasound can be used to evaluate the vessels in several areas of the body. For example, a Doppler ultrasound test of the blood vessels in the neck (carotid ultrasound) can be done to estimate a person's risk of a stroke from blockage in those arteries. Renal ultrasound can help detect kidney problems. Lower extremity ultrasound can be used to detect a blood clot in the deep veins of the legs. A Doppler ultrasound also may be used to evaluate problems with the blood flow to the placenta and umbilical cord in a pregnant woman; problems with this blood flow may point to fetal distress.
Clinical Review Board: All Healthwise education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.
PeaceHealth endeavors to provide comprehensive health care information, however some topics in this database describe services and procedures not offered by our providers or within our facilities because they do not comply with, nor are they condoned by, the ethics policies of our organization.