Low Endogenous Recanalization in Embolic Central Retinal Artery Occlusion-The Retrobulbar 'Spot Sign'. - Altmann, Mathias; Ertl, Michael; Helbig, Horst; Schömig, Beate; Bogdahn, Ulrich; Gamulescu, Maria‐Andreea; Schlachetzki, Felix (Journal of neuroimaging: official journal of the American Society of Neuroimaging, 2015)