CT Scans and CTA Imaging

With Banner's advanced technologies and certified radiology team, you’ll receive the most accurate results for any CT scan or CTA your doctor orders.

What Is a CT Scan?

A computerized tomography scan is commonly known as a CT scan. It is an x-ray that views a specific part of your body from various angles and then combines these images to get a complete and comprehensive picture of internal organs, the brain, bones, muscles, blood vessels and nerves. Sometimes a contrast dye is injected to enhance whatever the radiologist and your doctor are looking at.

When Is a CT Scan Used?

CT scans are commonly associated with detecting a stroke or brain injury, but it can be used in a number of different ways. CT scans can help:

• Detect tumors, abscesses or other abnormalities in the body
• Detect internal injury or bleeding
• Assist doctors in determining the exact site of a tumor or area to biopsy
• Guide surgical procedures

A CT scan is often combined with a PET scan to see how a treatment, such as a cancer treatment, is working. This ensures that you or your loved one is getting the right treatment or procedure at the right time and to the right area of your body.Learn more about PET scans.

What Is a CTA Scan?

CTA stands for computed tomography angiogram. It is a non-invasive procedure that combines a CT scan with the use of a special dye injected into your bloodstream. Anangiogramcan also be performed without the use of a CT scan.

When Is a CTA Used?

A CTA (CT angiogram) is used to look for any abnormalities in blood vessels located in your brain, heart, lungs, kidneys or other areas of your body. It is commonly used to find the location of an aneurysm, examine blocked or narrowed arteries, find blood clots, identify abnormalities in your brain or to evaluate a tumor. CTAs are commonly used to help diagnose a stroke or heart attack.

How to Prepare for a CT Scan or CTA

A CT or CTA scan is usually an outpatient procedure, which means it can be done at a Banner Health hospital, clinic or at select Banner Imaging locations.

Typically, very little preparation is needed but common preparation includes:

• Removing metal objects:You cannot wear any metal jewelry, hair clips or clothes with metal zippers or buttons
• Fasting:Depending on your scan you may be asked to fast for a few hours prior
• Drinking fluids:For some abdominal or pelvic scans you may be asked to drink a special substance, such as barium, before the scan
• Receiving a contrast dye:Depending on your scan, a contrast dye may be injected into your bloodstream

What to Expect from a CT Scan or CTA

CT scans and CTAs are painless procedures. You will lie on a motorized table that moves through the scanner. You will be asked to remain as still as possible for the remainder of the scan and you may hear buzzing or whirring noises. Most scans take between 5-30 minutes.

For a CTA, you will receive an IV in your arm that will administer the contrast dye used as part of the scan.

Associated Risks

Complications are rare. If a contrast dye is used, some people may have an allergic reaction, but it is unlikely. Pregnant women should not have a CT scan.

If you have any questions or concerns about your CT scan or CTA, be sure to talk to your doctor.