Flat panel imaging of occlusion site and collateral scores for emergent large vessel occlusion.

•FPD imaging may provide an alternative workflow for acute ischemic stroke patients.•FPD-CTA can evaluate the site of intracranial occlusion and collateral status.•We found strong concordance between FPD-CTA and standard CTA on both.•This technique has important implications for triaging patients evaluated for MT.•Patients with known ELVO transferred from outside hospitals may especially benefit.