A CT Angiography is a type of CT scan that helps evaluate the blood vessels in the body. 
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.
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.
- A saltwater fluid may be pushed in, to prevent blocking.
- Sticky patches may be placed on your chest to record your heartbeat during the scan.
- 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.
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