To use all functions of this page, please activate cookies in your browser.
With an accout for my.chemeurope.com you can always see everything at a glance – and you can configure your own website and individual newsletter.
- My watch list
- My saved searches
- My saved topics
- My newsletter
Intravenous digital subtraction angiography
Intravenous digital subtraction angiography (IV-DSA) is a form of angiography which was first developed in the late 1970s.
Additional recommended knowledge
IV-DSA uses a computer technique which compares an x-ray image of a region of the body before and after radiopaque iodine based dye has been injected intravenously into the body. Tissues and blood vessels on the first image are digitally subtracted from the second image, leaving a clear picture of the artery which can then be studied independently and in isolation from the rest of the body.
Some studies have indicated that IV-DSA is not suitable for patients with diabetes or renal insufficiency because the dye load is significantly higher than is used in arteriography. However, IV-DSA has been used successfully to study the vessels of the brain and heart and has helped detect carotid artery obstruction and to map patterns of cerebral blood flow. It also helps detect and diagnose lesions in the carotid arteries which is a potential cause of strokes.
IV-DSA has also been useful in assessing patients prior to surgery and after coronary artery bypass surgery and some transplant operations.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Intravenous_digital_subtraction_angiography". A list of authors is available in Wikipedia.|