blood clot inside a blood vessel or artificial bypass graft
How is the test performed? Clothing is removed from the area under study. Detectors are placed on the skin at specific points over the blood vessel being tested. The detectors use special sound waves that are bounced of the blood vessels and blood inside the vessels. The detectors send the information to a monitor, where it is processed and recorded. This test causes no pain and does not expose people to harmful radiation.
What is involved in preparation for the test? Generally, no preparation is required. A doctor can give any instructions if needed.
What do the test results mean? Abnormalities in the pattern of blood flow can mean different things. Some common causes of abnormalities include:
blockage in the arteries, such as from cholesterol build-up
blockage or blood clots in an artificial bypass graft
Author: Reviewer: eknowhow Medical Review Panel Editor: Dr John Hearne Last Updated: 22/09/2004 Contributors Potential conflict of interest information for reviewers available on request
This website and article is not a substitute for independent professional advice. Nothing contained in this website is intended to be used as medical advice and it is not intended to be used to diagnose, treat, cure or prevent any disease, nor should it be used for therapeutic purposes or as a substitute for your own health professional's advice. All Health and any associated parties do not accept any liability for any injury, loss or damage incurred by use of or reliance on the information.