Resources

Q

What is CT Angiography (CTA)?

A

CT angiography uses X-rays to view blood flow in blood vessels throughout the body, from arteries serving the brain to those bringing blood to the lungs, kidneys, arms, and legs. Beams of X-rays create cross-sectional images that are assembled by a computer into a three-dimensional picture of the area in question.

Q

How should I prepare for my CT Angiography (CTA)?

A

To prepare for a CTA, we recommend you dress comfortably. Also avoid any objects that contain metal, such as jewelry, hair clips, and dentures that may interfere with the procedure. You will not be asked to wear a gown unless the technician feels your clothing could affect the results of the scan.

Depending on what part of the body is being examined, you may receive a contrast injection. Contrast material is a dye that makes your organs and blood vessels more visible when you are scanned. If contrast is used, you will be asked not to eat or drink for 4 hours prior to the procedure. After the scan you should drink plenty of liquids to help flush the contrast out of your system.

Q

Why might my doctor recommend CT Angiography (CTA)?

A

A CTA may be recommended for a variety of reasons. CTA helps visualize blood flow in the arteries that serve your kidneys, in patients with high blood pressure and those who are suspected of having kidney disorders. It also is used to identify life threatening aneurysms in heart and brain. CTA also can help detect narrowing and blockage in the arteries.