Computed tomography angiography

This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Computed tomography angiography" – news · newspapers · books · scholar · JSTOR (July 2014) (Learn how and when to remove this message)

Computed tomography angiography
Sagittal thin slice of a computed tomography angiography abdominal aortic aneurysm (AAA) (arrows)
OPS-301 code	3-228

Computed tomography angiography (also called CT angiography or CTA) is a computed tomography technique used for angiography—the visualization of arteries and veins—throughout the human body. Using contrast injected into the blood vessels, images are created to look for blockages, aneurysms (dilations of walls), dissections (tearing of walls), and stenosis (narrowing of vessel). CTA can be used to visualize the vessels of the heart, the aorta and other large blood vessels, the lungs, the kidneys, the head and neck, and the arms and legs.^{[citation needed]} CTA can also be used to localise arterial or venous bleed of the gastrointestinal system.^[1]