Comparison of Imaging Selection Criteria for Intra-Arterial Thrombectomy in Acute Ischemic Stroke with Advanced CT.

• Early mechanical thrombectomy improves clinical outcomes. • Noncontrast CT-multi-phase CTA is used for determining eligibility for thrombectomy. • CTP can help to select patients who are eligible for thrombectomy. • Noncontrast CT-multi-phase CTA and CTP are comparable for patient selection. • Multi-phase CTA is more accurate than single-phase CTA for assessment of collaterals.