Computed Tomography Angiography (CTA) | 合法醫療器材資訊網

CT angiography is a type of medical test that combines a CT scan with an injection of a special dye to produce pictures of blood vessels and tissues in a part of your body. The dye is injected through an intravenous (IV) line started in your arm or hand.

A computerized tomography scan, or CT scan, is a type of X-ray[1] that uses a computer to make cross-sectional images of your body. The dye injected to perform CT angiography is called a contrast material because it "lights up" blood vessels and tissues that are being studied.

You may need this medical test if you have an abnormality that involves the blood vessels of your brain, heart, lungs, kidneys, or other parts of your body. Healthcare providers may use the information from this test to learn more about your condition and ...