Acute ischemic stroke accounts for about 80% of stroke cases.1 The introduction of endovascular treatment (EVT), where a thrombus is removed by means of a retrieval device, has led to a breakthrough for the therapy of acute ischemic stroke.2 However, although in the large majority of cases successful recanalization of the occluded vessel is attained3,4, only one third of patients is left with a good clinical outcome, defined as modified Rankin Scale from 0 to 2 at 90 days follow-up.5