biostudies-literatureKatz JMNational Institute of Neurological Disorders and Stroke of the National Institutes of HealthSiemens HealthineersNINDS NIH HHSNational Institutes of Health1798-1806https://www.ebi.ac.uk/biostudies/studies/S-EPMC8562740biostudies-literatureUnknown42(10)<h4>Background and purpose</h4>Delays to reperfusion negatively impact outcomes of patients with ischemic stroke, yet current guidelines recommend selective sequential imaging for thrombectomy candidates. We aimed to quantify and analyze time delays associated with rescanning in sequential acute stroke imaging.<h4>Materials and methods</h4>This was a retrospective cohort study of consecutive patients with acute ischemic stroke who underwent imaging for treatment decision-making from January 1, 2017, to June 30, 2020. Rescan time delay was defined as ≥10-minute difference between initial NCCT and CTA ± CTP. Mean rescan time delays in comprehensive and primary stroke centers were compared. Bivariate and multivariable regression analyses assessed clinical and imaging factors associated with rAJNR. American journal of neuroradiologyRescan Time Delays in Ischemic Stroke Imaging: A Retrospective Observation and Analysis of Causes and Clinical Impact.PMC8562740R56NS114275R56 NS114275O'Hara JKatz JMBoltyenkov ATGribko MPandya AFeizullayeva CWang JJSanelli PCMartinez GfalseRescan Time Delays in Ischemic Stroke Imaging: A Retrospective Observation and Analysis of Causes and Clinical Impact.<h4>Background and purpose</h4>Delays to reperfusion negatively impact outcomes of patients with ischemic stroke, yet current guidelines recommend selective sequential imaging for thrombectomy candidates. We aimed to quantify and analyze time delays associated with rescanning in sequential acute stroke imaging.<h4>Materials and methods</h4>This was a retrospective cohort study of consecutive patients with acute ischemic stroke who underwent imaging for treatment decision-making from January 1, 2017, to June 30, 2020. Rescan time delay was defined as ≥10-minute difference between initial NCCT and CTA ± CTP. Mean rescan time delays in comprehensive and primary stroke centers were compared. Bivariate and multivariable regression analyses assessed clinical and imaging factors associated with r2021-01-01T00:00:00Z2021 Oct2025-04-03T22:35:16.869Z2024-10-16T04:26:53.782ZS-EPMC85627403438514210.3174/ajnr.A722710.3174/ajnr.a7227