What Is CT Angiography?

CT angiography (CTA, CT angiography) is a combination of CT enhancement technology and thin-layer, large-scale, fast-scanning technology. Through reasonable post-processing, the details of blood vessels in various parts of the body are clearly displayed. It is non-invasive and easy to operate, and is of great value for vascular mutations, vascular diseases, and showing the relationship between lesions and blood vessels.

CT angiography

CT angiography (CTA, CT angiography) is a combination of CT enhancement technology and thin-layer, large-scale, fast-scanning technology. Through reasonable post-processing, the details of blood vessels in various parts of the body are clearly displayed. It is non-invasive and easy to operate, and is of great value for vascular mutations, vascular diseases, and showing the relationship between lesions and blood vessels.

Chinese name

CT angiography

Foreign name

CTA, CT angiography

Function

Showing important value in the relationship between lesions and blood vessels

Alias

Non-invasive angiography

In medicine, it is also called non-invasive angiography (CT angiography or CTA for short). Angiography is an interventional detection method. The contrast agent is injected into the blood vessel, because X-rays cannot penetrate the contrast agent. This property is passed through the developer

Willis ring

X-rays are used to diagnose vascular disease.

The commonly used angiographic contrast agent is iodine reagent. In rare cases with contraindications to the use of iodine reagent, carbon dioxide is used as a contrast agent.

CT angiography (CTA) refers to the intravenous injection of iodine-containing contrast agent, and after processing the image by a computer, the intracranial vascular system can be displayed in three dimensions, which can replace some DSA examinations. CTA can clearly show the cerebral arterial ring (Willis ring), as well as the anterior, middle, and posterior arteries of the brain and their main branches, which can provide important diagnostic evidence for occlusive vascular disease. The diagnosis of ischemic cerebrovascular disease can be advanced to 2 hours after onset.

With the development of interventional radiology, angiography has become an important clinical diagnostic method.

CT angiography (6 photos)

It plays an irreplaceable role in interventional therapy. Angiography plays an important role in the diagnosis and treatment of head and neck and central nervous system diseases, cardiac macrovascular diseases, and tumors and peripheral vascular diseases.