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Overview Brief

A CT Angiography is a type of CT scan that helps evaluate the blood vessels in the body. [1]

What is CT angiography?

A CT Angiography is a non-invasive imaging technique used to diagnose abnormalities in the blood vessels of various organs.

  • When done for the blood vessels of the heart, it is called a CT Coronary Angiography.
  • It is being used to evaluate the cardiovascular condition of people.
  • It is done to detect the presence of any narrowed or blocked arteries and veins in all parts of the body.
  • It helps to detect injuries, aneurysms, blockages, congenital birth defects of the heart, etc.[1]

 A CT Angiography requires no recovery time like traditional angiography.

How is CT angiography performed?

Before a CT angiography is performed, you will be explained the procedure by the technician.

  • You will be asked to lie down on a table.
  • Straps or pillows may be used to keep you still during the exam.
  • If a contrast dye needs to be used, it will be injected into your body via IV.[2]
  • A saltwater fluid may be pushed in, to prevent blocking.[3]
  • Sticky patches may be placed on your chest to record your heartbeat during the scan.[4]
  • The table will then be taken under the scanner.
  • You may be asked to hold your breath during the scan to prevent any movements.

The CT Angiography scanning takes a few seconds to perform.

Side effects/risks of CT angiography

A CT Angiography is not performed during pregnancy. Other risks include:

  • Allergy to the dye.
  • Excessive radiation can cause cancer.
  • Spiling out of the dye from the vessel it is injected into.

Preparation before performing CT angiography

For a CT Angiography, you will need a referral letter from your consulting physician.

  • You will need to change into loose and comfortable clothing.
  • Remove any jewelry and metal objects.
  • If a contrast dye is going to be used, you will be asked to not eat or drink for a few hours before the test.
  • Inform your doctor about any current illnesses you may be suffering from.

Post-care after CT angiography

The post-care after a CT Angiography include:

  • If the contrast dye injecting needle is still on your arm, it will be removed.
  • Drink plenty of water to flush out the dye from your body.[3]

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