Types: CT | CTA | PET/CT
Computed tomography angiography (CTA) is a specialized X-ray that examines blood flow in arteries when they are filled with a contrast material (a substance that makes the blood vessels show on an X-ray). Computed tomography (CT) uses a sophisticated machine to take X-rays from many different views, producing detailed two-dimensional images that can be combined by a computer to form three-dimensional images.
CTA can be used to view blood vessels throughout the body. It is most commonly used to study the:
- Legs or arms
This procedure is done to help doctors identify diseased, narrowed, enlarged, and blocked blood vessels and locate where internal bleeding may be occurring. Some specific uses include:
- Detect atherosclerosis (narrowing of the arteries) or an aneurysm (ballooning out of a section of a blood vessel), which could lead to a heart attack or stroke
- Examine arteries in the lungs to check for an embolism (blockage of a blood vessel by a blood clot or other foreign substance)
- Evaluate disease in kidney arteries and help get ready for a kidney transplant
Preparing for your CTA scan
- No solid food 4-6 hours before exam
- Drink 16 ounces of water one hour prior to exam. Patient may void.
- Please arrive on time and plan to be at the facility for approximately 1-2 hours.
- Wear warm comfortable clothing.
- Please bring your insurance information and written order from your physician