What is CT Angiography?
Angiography is a minimally invasive medical test that helps physicians diagnose and treat medical conditions. Angiography uses one of three imaging technologies and, in most cases, a contrast material injection is needed to produce pictures of blood vessels in the body.
Angiography is performed using:
- x-rays with catheters
- computed tomography (CT)
- magnetic resonance imaging (MRI)
CT angiography uses a CT scanner to produce detailed images of both blood vessels and tissues in various parts of the body. An iodine-rich contrast material (dye) is usually injected through a small catheter placed in a vein of the arm. A CT scan is then performed while the contrast flows through the blood vessels to the various organs of the body. After scanning, the images will be processed using a special computer and software and reviewed in different planes and projections.
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What are some common uses of the procedure?
CT angiography is used to examine blood vessels and the organs supplied by them in various body parts, including:
- abdomen (such as the kidneys and liver)
- legs and feet
- arms and hands
Physicians use this test to diagnose and evaluate many diseases of blood vessels and related conditions such as:
- blockages (including those from blood clots or plaques)
- disorganized blood vessels and blood supply to tumors
- congenital (birth related) abnormalities of the heart, blood vessels or various parts of the body which might be supplied by abnormal blood vessels
Learn more at http://www.radiologyinfo.org/en/info.cfm?pg=angioct