CT Angiography Without Followed by With Dye - Head

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




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



CT angiography (CTA) is a test that uses X-rays to create detailed images of the blood vessels in the head.

  • This may be done before and after a dye is put into a vein in your arm or hand.
  • The dye helps to highlight the blood vessels, so they can be seen better.

CTA of the head is used to find problems with the blood vessels in the head, including:

  • Aneurysms (bulging arteries due to weakened arterial walls)
  • Blood clots
  • Blockages
  • Other problems

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

  • You may be told not to eat or drink for at several hours before the test.
  • A CTA is painless.
  • You must lie still during the exam. Moving can blur [the images.
  • Generally, a complete scan takes only a few minutes. New scanners work even faster.
  • The contrast dye may cause you to feel flushed or to have a bad taste in your mouth. This only lasts 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?
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:

Head Scan
Head CT Scan
Head CAT Scan
Head Angiography
CT Scan
Brain Scan
Brain CT Scan
Brain CAT Scan
Brain Angiography
Angiography
Angio


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