Endovascular treatment uses small catheters inserted into your blood vessels to deliver glue or other obstructive materials into the AVM so that the blood no longer flows through the malformation. It is performed in the angiography suites of the Radiology Department by a Neuro-Interventionalist. The procedure is performed under general anaesthesia. A small incision is made in the groin and a catheter is inserted into an artery then passed through the blood vessels to the feeding arteries of the AVM. Occluding material, either coil or acrylic glue, is passed through the catheter into the AVM. The procedure time can vary and the patient remains in hospital several days for observation. The advantage of this treatment is that it is less invasive than surgery and can be used to treat deep or inoperable AVMs. Disadvantages include risk of embolic stroke from the catheter and re-bleeding, since the AVM is not completely obliterated. Multiple treatments may be necessary.