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CT Angiography


What is a CT Angiography?

CT Angiography (CTA) is a technique that utilizes the intravenous injection of iodinated contrast media to optimally enhance blood vessels throughout the body.  These studies are essentially non-invasive and are extremely accurate in the diagnosis of vascular diseases.  Commonly performed CTA’s include examinations of the following:

  • Brain Arteries (Circle of Willis)
  • Coronary Arteries
  • Thoracic Aorta
  • Abdominal Aorta
  • Lower Extremities
  • Carotid Arteries
  • Renal Arteries



There is no preparation for this study.


What to expect:

You will be asked to lie on a table that glides on a track through a donut shaped scanner.  You will hear noises such as humming, buzzing or clicking throughout the exam.  You should remain as still as possible, and may be asked to hold your breath for short durations during the exam.

 CT scans can be performed with or without IV and oral contrast.  If you are given IV contrast you may notice a slight metallic taste or a warm sensation in your body.  Oral contrast could lead to a temporary change in your bowels. 

 Because the contrast medium is iodine-based you may experience an allergic reaction which could include sneezing, itching, or other allergic symptoms; any patient experiencing a reaction will be treated before they leave our office.  In rare cases you could experience anaphylaxis which is restricted breathing caused by swollen tissues in the airway.  In these cases emergency medical treatment is administered immediately. If you think you may be allergic to iodine please let us know when your appointment is scheduled.