Fig. 2

Patient with 90 % carotid artery stenosis and unfavorable outcome. a Large prolonged TTP volume on TTP-map provided by scanner software without thresholding. b Large TTP volume with markedly prolonged TTP on TTP-map calculated by Olea-Sphere®. c DWI provided by scanner software showing multiple areas with restricted diffusion. High grade intracranial stenosis or occlusion was excluded in angiography. d Large prolonged Tmax volume calculated by Olea-Sphere®