A carotid artery CT angiogram is performed to evaluate the carotid arteries. The carotid arteries extend from the aorta near the heart and supply the brain with blood. The purpose of a carotid CT angiogram is to evaluate if there is disease in the carotid arteries, which is usually created by atherosclerosis. If the carotid arteries become narrowed or blocked, there will be insufficient blood supply to the brain, and a stroke may occur. If disease is present, you may be a candidate for an interventional procedure or surgery before an adverse outcome occurs.
For more information about CT angiography, please see our sections on CT angiography versus angiogram, CT versus MRI, risks of a CT angiogram, the CT angiogram procedure, and finding a CT angiogram radiology center. If you have any questions or comments, or were not able to find the information you were looking for, please fill out the quick submit form at the bottom of this page. We will attempt to provide answers to these questions.