A blood filled, balloon-like bulge in the wall of a blood vessel.

Arteriovenous Malformation - an abnormal connection between the arteries and veins in the brain or spine.

A scanning tool that combines x-ray with a computer to produce detailed images of the brain.

Bleeding, which within the brain is usually referred to as cerebral haemorrhage. It can be caused by a variety of factors, such as trauma, aneurysms, AVMs, or hypertension.

A scanning tool which uses magnetic fields to capture a three-dimensional image of the brain.

An arteriovenous malformation of the brain supplied by brain arteries. It usually presents in childhood.

A method of delivering highly focused radiation to a tumour or vascular abnormality, which gradually causes it to shrink.

An arteriovenous malformation deep within the brain which usually presents in newborn babies or young children.