A Doppler ultrasound is an imaging test that uses acoustic waves to show blood moving with blood vessels. A regular ultrasound also uses acoustic waves to create pictures of structures inside the body, however it can't reveal blood flow. Doppler ultrasound works by measuring sound waves that are shown from moving objects, such as red blood cells. This type of Doppler uses a computer to change acoustic waves into different shades. Doppler ultrasound tests are used to help healthcare providers figure out if you have a problem that is decreasing or blocking your blood flow. Obstructed blood flow in the legs can cause a problem called deep vein thrombosis. Tightening of arteries in the neck can mean you have a condition called carotid artery stenosis. Symptoms of peripheral arterial disease include: Numbness or weak point in your legs; Painful cramping in your hips or leg muscular tissues when strolling or climbing stairways; Cold feeling in your lower leg or foot; Change in color and/or shiny skin on your leg. You might require a Doppler ultrasound if you: Have had a stroke. After a stroke, your health and wellness care provider may order a special type of Doppler test, called transcranial Doppler, to inspect blood circulation to the brain. Are pregnant and your provider believes you or your expected baby may have a blood circulation issue. Your provider might believe a problem if your coming infant is smaller than it must go to this stage of pregnancy or if you have certain illness.
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