CT Angiography Without Dye Followed by With Dye - Chest

This is a test that uses X-rays to create detailed images of the blood vessels in your chest.




This is a test that uses X-rays to create detailed images of the blood vessels in your chest.



CT angiography (CTA) is a test that uses X-rays to create detailed images of the blood vessels in your chest. This is done before and after a dye is put into a vein in your arm or hand. The dye helps to highlight the blood vessels in your chest, so they can be seen better.

  • CTA is used to find blood clots, blockages and other problems with blood vessels in the chest.

Here are some things you should know before having CT angiography (CTA):

  • You may be told not to eat or drink for at least four hours before the test.
  • CTA is painless. However, you must lie still during the exam, because moving can blur the images.
  • Generally, a complete scan takes only a few minutes; new scanners work even faster.
  • You will be given a contrast dye as a drink or an injection. The dye helps some organs show up better in the pictures.
  • The contrast dye may cause you to feel flushed or to have a bad taste in your mouth for a short time.

The costs for this test include the charge for the test (facility charge) and physician charges (for performing or interpreting the test). You may get separate bills from the facility and the physician's office.

What should I ask my health care provider before having this test?

  • Can I eat before the test? If not, how many hours before the test should I stop eating?
  • Do I need to have the test with dye? If I do, should I be concerned if I have allergies?
  • Is there any special preparation for the test? (If so, get clear steps to follow.)
  • What is the reason for the test? Are the test results likely to change my treatment plan? If not, why do I need the test?
  • Are there any less expensive, but effective, alternatives to my getting this test?

Source UHC.com

Also known as:

CT Scan
Chest CT Scan
Chest CAT Scan
Chest Angiography CT Scan
Chest Angiography CAT Scan
CAT Scan of Chest With Angiography


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