Comparison of CT with diffusion-weighted MRI in patients with hyperacute stroke - Fiebach, Jochen Benedikt; Sartor, Klaus; Jansen, Olav; Schellinger, Peter; Knauth, Michael; Hartmann, Marius; Heiland, Sabine; Rhyssel, Henning; Pohlers, Olivia; Hacke, Werner (Neuroradiology, 2001)