Imaging triage of acute stroke patients for endovascular clot retrieval: Effect of increased therapeutic window on the utilization of CT perfusion.

Despite a 38.7% increase in CTP utilization, we experienced a reduction in the number of CTPs performed/patient triaged to ECR. This did not reflect higher LVO prevalence among later presenters but may reflect changed selection criteria for CTP and/or decision making about suitability for ECR.