Utilization of CT angiography of the head and neck in the era of endovascular therapy for acute ischemic stroke: a retrospective study.

Little is known of the impacts on healthcare resources that have resulted from the system-wide changes made necessary by the widespread adoption of EVT. Our study shows that at our site, these system changes have resulted in large increases in CTA utilization with very small numbers of patients ultimately undergoing EVT or carotid intervention.