![]() What are the advantages of a Doppler examination over other diagnostic procedures?Ī Doppler examination is a safe and non-invasive procedure, which can be performed as an alternative to minimally invasive procedures such as arteriography and venography, which require small incisions to inject a contrast dye into the arteries and veins in order to detect abnormalities. ![]() Once completed, the gel will be cleaned from your skin. The reflected sound waves are then processed by a computer to create graphs or images that depict the movement of the blood. The transducer transmits and receives the reflected sound waves, which are amplified and recorded. Noninvasive spectral Doppler waveform assessment is a principal diagnostic tool used in the diagnosis of arterial and venous disease states. The transducer is then gently moved over the gel. Your doctor will apply a water-soluble gel on a transducer (hand-held probe) and on your skin over the region to be tested. This can alter the results of the Doppler examination.ĭuring a Doppler examination, you will be connected to a blood pressure machine and your blood pressure is continuously monitored. Monitor blood flow after blood vessel surgeryīefore a Doppler examination, you may be advised to quit smoking since the nicotine found in cigarettes may cause constriction of arteries in the extremities. Map blood vessels that could be used as grafts Leg pain and intermittent claudication (muscle cramp and aching)īlood flow to a transplanted liver or kidney What are the indications for a Doppler examination?ĭoppler ultrasound is used as a diagnostic tool for the following:Ītherosclerosis or plaque (deposits of cholesterol, calcium and minerals) formation in blood vessels It produces a picture of the blood vessels and surrounding organs.īedside or continuous wave Doppler: This is a portable machine, generally used at the bedside in the hospital.Ĭolour Doppler: It involves the use of a computer to convert Doppler sounds into coloured images of the blood vessel. Through this method, the Doppler ultrasound can determine reduced or blocked blood flow in your arteries and veins.ĭuplex Doppler: The technique is a standard ultrasound that uses a computer to convert the sound waves into a graph. When there is no change in pitch, it shows that there is no flow of blood, which could in turn indicate a blockage or abnormality in the blood vessel. The movement of the blood inside the vessel creates changes in the pitch of the reflected sound waves. The sound waves that are directed on the blood vessels bounce off the circulating blood cells and are recorded as the speed and direction of blood flow. ![]() Home / Procedure / Vascular System / Doppler Arterial Pressures and Examinationĭoppler Arterial Pressures and ExaminationĪ Doppler test or Doppler ultrasound is a non-invasive diagnostic procedure that uses high frequency sound waves to examine the rate of blood flow in your blood vessels.
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