Figure 2. Estimated Successful Recanalization From the Start of Intravenous Alteplase to Recanalization Assessment Stratified by Residual Flow (n = 470 Patients).

Results are derived from the logistic regression model reported in Table 2 with residual flow categorized as yes (grade 1 and 2; n = 93) vs no (grade 0; n = 377). The shaded areas indicate 95% CIs. Recanalization of intracranial thrombus with intravenous alteplase was assessed using the revised arterial occlusive lesion (rAOL) score on repeat computed tomographic angiography (CTA) of the head or on first angiographic acquisition of the affected intracranial circulation. Successful recanalization was defined as an rAOL score of 2b or 3. The rAOL score is described in detail in the Methods section and in eTable 1 in the Supplement.