Doppler ultrasound scanning is an imaging technique commonly used to measure the blood flow through a blood vessel in circulatory disorders such as thrombosis and embolism. It may also be used to measure blood pressure in the limbs. The technique produces an image of the blood flow through the vessel so that narrowing and blockages of the vessel can be detected. A routine Doppler ultrasound scan can take up to 20 minutes to perform and is completely painless and safe.
From the 2010 revision of the Complete Home Medical Guide © Dorling Kindersley Limited.