![]() Doppler ultrasound may be used to guide decisions during pregnancy when: This test can show if the fetus is getting enough oxygen and nutrients. It may check blood flow in the umbilical cord, through the placenta, or in the heart and brain of the fetus. Guide treatment such as laser or radiofrequency ablation of abnormal veins.Plaque in the carotid arteries can reduce blood flow to the brain. Find the presence, amount, and location of arterial plaque.Monitor the flow of blood after blood vessel surgery.Find out the amount of blood flow to a transplanted kidney or liver.It also can look at the health of grafts used to bypass blockage in an arm or leg. Map veins that may be used for blood vessel grafts.Check for varicose veins or other vein problems.After a stroke, this can be done with a test called transcranial Doppler (TCD) ultrasound. Assess blood flow after a stroke or other condition that might be caused by a problem with blood flow. ![]() This is a condition caused by atherosclerosis of the lower limbs. Check leg pain that may be caused by intermittent claudication.It's most often used for the neck, arms, and legs. ![]()
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