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Angiography is a specialized type of x-ray where a contrast agent (or dye) is injected into the blood vessels, during which many x-rays are taken and used to generate a 3D image of the blood vessels examined. This patient has a congenital malformation of the blood vessels in the brain called an arterial venous malformation (AVM). These abnormalities can be dangerous if they rupture or press on certain critical regions of the brain. They can also cause seizures and headaches.
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