At Banner Health, our certified radiology team uses advanced medical imaging technology to give you accurate, detailed results. Whether your doctor orders a CT scan, CT angiography (CTA) or another test, you can expect clear answers and personalized care.
A computed tomography (CT) scan - sometimes called a CAT scan - is a type of X-ray that takes multiple images from different angles. These cross-sectional images are combined to give your doctor a complete view of your body’s internal organs, bones, muscles, blood vessels, soft tissues and nerves.
CT scans use ionizing radiation to create highly detailed CT images. Sometimes, contrast agents (also called contrast material) are used to make certain areas easier to see.
You may hear both terms, but a CAT scan and a CT scan are the same test. “CAT” stands for “computed axial tomography,” while “CT” stands for “computed tomography.”
CT scans help doctors evaluate many conditions. Your provider may order a CT scan to:
CT scans are often combined with other imaging, like a PET scan, to provide a more complete picture of your health.
Learn more about PET scans at Banner Health.
CT angiography (CTA) is a type of computed tomography that captures detailed images of your blood vessels. A contrast agent is injected into a vein to highlight arteries and veins.
CTA may be used to:
For information on how CT angiography is used to examine the heart and coronary arteries, visit our angiogram page.
Most CT and CTA scans are outpatient procedures. They are available at Banner hospitals, clinics and select Banner Imaging locations.
Use our online tool to find a nearby location. Choose “CT/CT Angiography” under “exam type” to view available sites.
Need help scheduling? Our team is here to walk you through the process and answer any questions. Call your Banner provider or request an appointment online.
You’ll receive specific instructions based on the type of scan. In general, preparation may include:
CT scans and CTAs are quick and painless. You'll lie on a motorized table that passes through a CT scanner. To ensure clear images, you’ll be asked to stay very still and may be asked to hold your breath briefly.
If you’re having a CTA, a contrast agent will be injected through an IV in your arm. Some people notice a warm feeling or a metallic taste, which goes away quickly.
Most scans are completed within 5 to 30 minutes.
CT scans use ionizing radiation, but the radiation dose is carefully managed to be as low as possible. CT scans are not usually recommended during pregnancy.
Side effects from contrast material are rare. Some people experience mild allergic reactions like nausea or flushing. Serious reactions are uncommon, but it’s important to share any allergies or concerns with your provider before your test.
Your care team will monitor you throughout the procedure to ensure your safety and comfort.
With Banner’s advanced imaging tools and expert radiologists, you get fast, accurate results that support better decisions about your care. We offer a wide range of medical imaging services - including CT scans, CT angiography, and PET/CT - at comfortable, convenient locations across the communities we serve.
Don’t wait to get the answers you need. Schedule your CT scan or CTA today and take the next step toward better health.
A CT scan shows your internal organs, bones and soft tissues. A CT angiogram (CTA) highlights blood vessels using a contrast dye to check for blood clots or blockages.
Yes. The names are used interchangeably. “CAT scan” is an older term for computed axial tomography.
Yes. CT scans use ionizing radiation to create detailed CT images. The radiation dose is kept low for your safety.
Sometimes. Your doctor will let you know if you need to fast depending on the scan type.
Let your doctor know. Mild allergic reactions to contrast agents are rare and manageable, but precautions may be taken.
CT scans are usually not recommended during pregnancy due to the use of radiation. Always inform your care team if you're pregnant.
Whatever your need, your doctor can refer you to one of our conveniently located free-standing imaging centers or one of our hospitals.