MR Findings Of Vertebral AVM

Vertebral artery AVM’s are a rare entity. They are mostly commonly encountered in 2 part of vertebral artery. Mostly they have old history of penetrating trauma. AVM’s due to blunt injury or congenital cause is very rare. They may be asymptomatic or cause symptoms due to compression to the surrounding structures or the spinal cord. Color doppler ultrasound findings show high velocity, low resistance monophasic flow and also demonstrates feeders and draining vessels. Contrast MR Angiography of neck-Time of flight(TOF) images show the whole extent, origin and its relations with the spinal cord better along with feeders and draining vessels. It is drained by epidural veins and paraspinal veins.