1. preparation of ER staff and neurologists when a stroke code was started by EMT or triage
2. interpretation of multi-modality neuroimaging study, including plain head CT, CT angiography, CT perfusion, MRI, MRA, MR perfusion, to choose the way of treatment.
3. the procedure of IV rt-PA treatment or IA thrombectomy if patient is indicated
4. the neurocritical care patients for acute ischemic stroke in intensive care unit
5. how to take care of patients with acute ischemic stroke in general ward