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Although noncontrast computed tomography (CT) is the standard imaging approach for detecting hemorrhage in stroke patients, it is less accurate in detecting early ischemia; magnetic resonance imaging (MRI) is accurate in detecting ischemia but is not thought to be so for hemorrhage. As a result, both scans are performed in many stroke centers. In this prospective study, researchers compared the performance of the two scans in patients who presented to two academic stroke centers within 6 hours after onset of stroke symptoms. The scans were conducted sequentially (MRI first, including gradient recalled echo [GRE]) within 90 minutes of presentation to the emergency department; four experts read all scans in a blinded fashion, and final interp…