Article Figures & Data
Figures
- Fig 1.
A 70-year-old man presented with severe dizziness and ataxia. DWI showed a wedge-shaped infarct in the left cerebellar hemisphere (A) and multifocal infarcts in the right occipital lobe (B). C, An angiogram of the right subclavian artery showed occlusion of the hypoplastic right VA at the C4 level (arrow). Both internal carotid arteriograms showed poor development of both PcomAs (not shown). D, An arteriogram of the left subclavian artery shows occlusion of the V1 segment. Note the filling of the anterior spinal artery arising from the costocervical trunk in the late phase of the angiogram (arrowheads). E, Final angiogram after stent placement shows good patency of the occluded VA and good filling of the posterior circulation. F, Good patency of the stented lumen was seen on follow-up DUS 4 months later and without any neurologic deficit (mRS=0).
- Fig 2.
Diagram showing the recanalization process in patients with V1 segment occlusion. A, Smooth probing and traversing of the occluded segment by a 0.035-inch guidewire are followed by the introduction of a 4F angiocatheter (or a guiding catheter), which can also allow the passage of a PercuSurge protective balloon guidewire. B, Passage of the occluded segment can be identified by free regurgitation of blood as well as suction of debris beyond the occluded segment. Under distal balloon protection (C), angioplasty is followed by stent placement (D).
