CT angio of the lower limb is a type of Computerised Tomography angiogram technique that uses a contrast dye material.
What is CT Angio of Lower Limb?
The CT Angio of Lower Limb test is useful to detect abnormalities in the lower limbs.
- Helps detect aneurysms in the lower limbs.
- A CT Angio of Lower Limb is performed on suspecting insufficient blood supply to the legs.
- Fatigue in legs, tiredness in legs and hips on walking are common symptoms to perform this test.
- Helps detect peripheral artery disease, blood clots, blockages in the blood vessels, and gangrene. 
A CT Angio of Lower Limb test is very useful to prevent amputation of the lower limbs.
How is a CT Angio of Lower Limb performed?
A CT Angio of Lower Limb is performed similarly to other CT angiograms in the body.
- After the initial preparation, a contrast dye is injected into a vein in your arm using an IV catheter.
- You will be asked to lie on a narrow table that is centered with the CT scanner.
- The machine’s x-ray beams rotate around you to take images in different angles.
- You may be asked to hold your breath for a few seconds to prevent movement of images.
The CT Angio of Lower Limb takes about 5 minutes to perform after the initial preparation is done.
Side effects/risks of CT Angio of Lower Limb
The side-effects of a CT Angio of Lower Limb include:
- Allergy to the contrast dye.
- Pain on burning sensation during the injection of the dye.
Preparation before performing a CT Angio of Lower Limb
For a CT Angio of Lower Limb: 
- Wear loose clothes.
- Remove all metal objects, including jewelry.
- Fast for a few hours before the scan.
- Anesthesia or sedation may be needed in some cases.
Post-care after CT Angio of Lower Limb
Once the CT Angio of Lower Limb is done:
- The patient will be asked to drink lots of fluids to eliminate the dye.
- The patient will be asked to eat something to break the fast.
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