关键词: Angioplasty and stenting for intracranial stenosis Concomitant stenoses treatment Endovascular therapy in acute or unstable condition Location morphology access (LMA) classification and technical success prediction Long-term outcome of angioplasty or stenting for intracranial stenosis Middle cerebral artery (MCA) stenosis Patient selection based on stroke mechanism Preoperative evaluation by interventionists stroke neurologists and imaging neuro-radiologists Warfarin-Aspirin Symptomatic Intracranial Disease (WASID) trial