Comparison of Perfusion Imaging Definitions of the No‐Reflow Phenomenon after Thrombectomy—What Is the Best Perfusion Imaging Definition?

Existing imaging definitions of no-reflow varied significantly in prevalence and post-treatment perfusion imaging profile, potentially explaining the variable prevalence of no-reflow reported in literature. The definition of >15% CBV or CBF asymmetry best discriminated for functional outcome at 90 days, including patients with eTICI3 reperfusion. ANN NEUROL 2024;96:1104-1114.