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Table 2 TICI Scoring for assessment of procedural success in acute stroke therapy

From: Imaging predictors of procedural and clinical outcome in endovascular acute stroke therapy

Grade TICI Score
0 No Perfusion.
1 Antegrade reperfusion past the initial occlusion but limited distal branch filling with little or slow distal reperfusion.
2a Antegrade reperfusion of less than half of the occluded target artery previously ischemic territory (e.g. 1 major MCA division and its territory).
2b Antegrade reperfusion of more than half of the previously occluded target artery ischemic territory.
3 Complete antegrade reperfusion of the previously occluded target artery without visualized distal occlusion in all distal branches.