N=5 Poor contrast opacification on CTA to assess venous opacification
N=18 hemorrhagic transformation with mass effect (type PH-2) on follow-up CT
Stroke patients with complete occlusion of the distal internal carotid artery or/and MCA undergoing multimodal CT from July 2017 to September 2019N=207
N=5 Stroke onset to admissoion > 8h or unreliable time of stroke onset
