An ultrasound uses reflected sound waves to produce a picture of organs and blood vessels. The sound waves create a picture on a video screen.
Doppler ultrasound is a special kind of ultrasound. It can detect movement of blood through arteries and veins.
Some ultrasound tests are called "duplex." Duplex means "two parts." A duplex ultrasound combines the Doppler ultrasound with the more common ultrasound. The combination can help the doctor see more clearly what's going on.
There are no risks linked to an ultrasound test, and it is safe for pregnant women. It won't harm the baby (fetus).
You might have a Doppler ultrasound to:
You may be asked to avoid products that contain nicotine (cigarettes, chewing tobacco) for 30 minutes to 2 hours before the test. Nicotine causes blood vessels to narrow and may give false results.
Depending on what the test is for, you may be asked not to eat or drink after midnight before the test. Or you may be asked to drink water right before the test so that your bladder is full.
You'll need to:
The doctor or ultrasound technologist will have you lie on your back, side, or stomach, depending on which part of your body is being examined.
Follow-up care is a key part of your treatment and safety. Be sure to make and go to all appointments, and call your doctor or nurse call line if you are having problems. It's also a good idea to keep a list of the medicines you take. Ask your doctor when you can expect to have your test results.
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Current as of: February 14, 2017
Patrice Burgess, MD - Family Medicine
& Adam Husney, MD - Family Medicine & Martin J. Gabica, MD - Family Medicine & E. Gregory Thompson, MD - Internal Medicine & Howard Schaff, MD - Diagnostic Radiology
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