Fig. 1

Patient with 90 % carotid artery stenosis and favorable outcome. a Large prolonged TTP volume on TTP-map provided by scanner software without thresholding. b Slight prolongation of TTP volume on TTP-map calculated by Olea-Sphere®. Maps were visualized on fluid attenuated weighted images (FLAIR). c DWI provided by scanner software showing no restrictions. d Small prolonged Tmax volume calculated by Olea-Sphere®