Duration of a lower extremity ultrasoundĪ lower extremity ultrasound takes approximately 30 to 45 minutes to complete. A computer will create graphs that represent the blood flow through the vessels. The blood cells cause a change in the pitch of the reflected sound waves as they move through the vessels. The Doppler ultrasound can measure the speed of blood cells as they travel through the blood vessels. You will be asked to lie still during the ultrasound. Images of your blood vessels will be portrayed on the video monitor. Your technician will spread warm gel on your legs and move a small handheld unit called a transducer over the skin. You will be instructed to undress and lie on your back on a padded exam table. It is also important to wear comfortable clothing and bring your doctor's order to the exam.Įxpectations during a lower extremity ultrasound Preparing for a lower extremity ultrasoundIn preparation for a lower extremity ultrasound, follow your doctor's pre-imaging instructions. Blood clots can break off and travel to the pulmonary arteries causing a pulmonary embolism. Candidates for a lower extremity ultrasoundYour doctor may order a lower extremity ultrasound to search for blood clots in the legs. If you are at risk or experiencing deep vein thrombosis symptoms, your doctor will order a lower extremity ultrasound to search for blood clots. A lower extremity ultrasound is a diagnostic imaging test used to evaluate the blood flow through the legs’ major veins.Ī Doppler ultrasound will measure your blood flow and blood pressure by bouncing high-frequency sound waves off the red blood cells circulating in the legs.
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