Intracranial atherosclerosis of the anterior circulation (anterior ICAS) and intracranial atherosclerosis of the posterior circulation (posterior ICAS) are thought to involve different pathogeneses and risk factors.
<b>Background and Purpose:</b> Endovascular treatment (EVT) for acute vertebrobasilar intracranial atherosclerosis-related large vessel occlusion (ICAS-LVO) and its outcomes are not well known.
Identification of intracranial, atherosclerosis-related, large vessel occlusion (ICAS-LVO) is important to set up an optimal endovascular treatment strategy, as most ICAS-LVOs require specific endovascular modalities for efficient recanalization.