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.
Kathleen Romito, MD - Family Medicine & Howard Schaff, MD - Diagnostic Radiology
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.