Cerebral angiography is a diagnostic technique that uses an X-ray scanner and special dye, known as contrast, to determine the health of blood vessels in the brain and evaluate blood flow.

The test is helpful in diagnosing acute ischemic strokes, and can help your medical team decide whether surgery is the best option for reopening a blocked artery.

It is also used to confirm the presence and location of brain tumors, to evaluate the arteries of the head and neck before surgery, as well as to identify abnormalities such as cerebral aneurysms.