Angiography is a diagnostic test performed to evaluate your blood vessels, usually arteries, and most commonly is used to look at the blood vessels of the brain, chest, abdomen and legs. Angiography is performed by a specialist radiologist and nursing team. Contrast is injected into the blood vessels to be viewed on the x-ray image in real-time. Blockages and narrowing of the blood vessels are easily seen and may sometimes be treated in the same visit. It may also be used to demonstrate leakage or bleeding from a blood vessel, such as in the bowel.