Computed Tomography Angiography of Abdominal Vessels — With Intravenous Contrast

What is this test?

Abdominal CT angiography, often called abdominal CTA, is an imaging test that shows the arteries and other blood vessels in the abdomen. Intravenous contrast is used to make the vessels easier to see, and a radiologist interprets the images.

Why might I need this test?

Your clinician may order this test to evaluate symptoms such as sudden or persistent abdominal or back pain, a pulsating abdominal mass, unexplained bleeding, or reduced blood flow. It may also be used to monitor an abdominal aortic aneurysm or plan treatment of a blood-vessel condition.

How is the test performed?

You lie on a CT scanner table while an intravenous line is placed and contrast is injected, usually into a vein in your arm. The scanner takes several rapid images as you move through the scanner, and the images are then reviewed by a radiologist.

How do I prepare for the test?

Follow the instructions provided by the imaging facility. Tell your clinician about any prior contrast reaction, iodine allergy, kidney disease, pregnancy possibility, or medications such as metformin, because these factors may require special precautions; do not stop medication unless instructed.