Figure 1: Vertebral artery angiogram, lateral view. There is a smooth conical tapered occlusion of the distal vertebral artery typical of a dissection.

Figure 2: Vertebral artery angiogram A. Frontal view, B. Lateral view. There is a aneurismal dilatation (arrows) of the intracranial portion of the vertebral artery secondary to a dissection. There is a tapered narrowing of the vertebral artery proximal to the aneurysm. This frequently presents with subarachnoid hemorrhage.

Figure 3: Magnetic resonance angiogram, source image. There is narrowing of the lumen of the left vertebral artery with thrombus within the false lumen (arrow).