Kom-PU-ted To-MOG-ra-fi An-ji-OG-ra-fi Computed tomography
angiography (CTA) is a specialized x-ray that examines blood
flow in arteries when they are filled with a contrast material
(a substance that makes the blood vessels show on an x-ray).
Computed tomography (CT) uses a complex machine to take x-rays
from many different views, producing detailed two-dimensional
images that can be combined by a computer to form three-
dimensional images. CTA can be used to view blood vessels
throughout the body. It is most commonly used to study the: This
test is used to help doctors identify diseased, narrowed,
enlarged, and blocked blood vessels and locate where internal
bleeding may be occurring. Some specific uses include: Some
possible complications with this test include: There are certain
factors that may put you at risk for complications during this
test: An intravenous line (IV) is placed in a vein, and you will
lie down on a narrow table. Pillows and straps may be used to
keep you in a certain position. The part