title: The four Ps of acute stroke imaging: parenchyma, pipes, perfusion, and penumbra.
authors: H A
authors: HA
authors: Rowley
mesh_terms: D001921:Brain / Q000098:blood supply*; D002545:Brain Ischemia / Q000175:diagnosis / Q000503:physiopathology; D002543:Cerebral Hemorrhage / Q000175:diagnosis / Q000503:physiopathology; D002544:Cerebral Infarction / Q000175:diagnosis* / Q000503:physiopathology; D006801:Humans; D007089:Image Enhancement; D008279:Magnetic Resonance Imaging; D011379:Prognosis; D012039:Regional Blood Flow / Q000502:physiology