title: The ischemic penumbra: from celestial body to imaging technology.
authors.forename: Philip A
authors.initials: PA
authors.lastname: Barber
authors.forename: Lawrence R
authors.initials: LR
authors.lastname: Wechsler
mesh_terms: D002545:Brain Ischemia; D056324:Diffusion Tensor Imaging; D006801:Humans; D009682:Magnetic Resonance Spectroscopy