17 September 2010

Subclavian Steal

Note occlusion of the 3 cm long part of proximal left subclavian artery that is proximal to the left vertebral artery. The flow in the distal left subclavian artery is from the left vertebral artery - Subclavian Steal. As a consequence there is reverse flow in the left vertebral artery (confirmed by Duplex). Additionally there is stenosis in the origin of both vertebral arteries and in the right proximal subclavian artery (last image).