Hyperdense lesions following EVT for ischemic stroke is a common finding on CT scans. Without a dual energy CT scanner, it is often not clear whether the patient has contrast staining versus hemorrhage until obtaining a repeat CT scan or MRI brain.   Repeating the CT head can be helpful when it shows resolution of the lesion but also causes further exposure to radiation, transport of the patient and related risks, extra use of human resources, and cost for the hospital. MRI brain is usually not obtained in the early hours after EVT. 

Our study includes around 300 patients from Jan 1^st, 2018 until Dec 31^st, 2019 either presented directly to our center or transferred from regional hospitals. We retrospectively collected the variables related to demographics; vascular risk factors/comorbidities; clinical variables; EVT variables; radiologic evaluation; other complications; and clinical outcomes (follow up NIHSS and mRS).

Given the change of endovascular therapy practice with different devices and imaging analysis in recent years and because of wide range of variables and protocols in multiple studies, further research is needed to assess potential risk factors for poor outcome.