Fig 5.

Balloon angioplasty for treatment of atherosclerotic occlusion. A, Baseline angiogram demonstrates complete occlusion of the midsegment of the basilar artery (black arrow). Note the PICA−anterior inferior cerebellar artery (AICA) collaterals (white arrow) with reconstitution of flow at the distal basilar artery. B, Native image demonstrates an inflated Gateway PTA balloon catheter (Boston Scientific) (white arrow) at the level of the occlusive lesion. C, Posttreatment angiogram demonstrates complete reperfusion of the basilar territory with only mild residual stenosis (black arrow).