Recanalisation of middle cerebral artery occlusion after intra-arterial thrombolysis: different recanalisation grading systems and clinical functional outcome. - Arnold, M.; Nedeltchev, K.; Remonda, L.; Fischer, U.; Brekenfeld, C.; Keserue, B.; Schroth, G.; Mattle, H. P. (Journal of Neurology, Neurosurgery & Psychiatry, 2005)