InhaltsangabeIntroduction.- Principles of Magnetic Resonance Imaging (MRI).- Arterial stroke overview.- Territorial brain infarction.- Watershed infarction.- Transient ischemic attack.- Lacunar infarction and small arteries diseases.- Rare cerebral vasculopathy.- Hemopathy.- Cerebral hemorrhage.- Cerebral venous thrombosis.- Medullary infarction.- Imaging differential diagnosis in stroke.- Incidentalomas.- Thrombolysis.