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Research ArticleAdult Brain

Perfusion Scotoma: A Potential Core Underestimation in CT Perfusion in the Delayed Time Window in Patients with Acute Ischemic Stroke

K. Abrams and G. Dabus
American Journal of Neuroradiology June 2022, 43 (6) 813-816; DOI: https://doi.org/10.3174/ajnr.A7524
K. Abrams
aFrom the Department of Radiology (K.A.), Baptist Hospital of Miami, Miami Neuroscience Institute, Miami, Florida
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G. Dabus
bDepartment of Neuroendovascular Surgery (G.D.), Miami Cardiac and Vascular Institute, Miami Neuroscience Institute, Miami, Florida
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Abstract

SUMMARY: With the growing rise in utilization of CT perfusion for selecting patients for thrombectomy in acute ischemic stroke from large vessel occlusion, some potential pitfalls are becoming more commonly seen particularly when it comes to estimating the core infarct size on CT perfusion. Ghost infarct core has been described to account for overestimating core infarct size in the early time period (<3 hours). Herein, we describe the phenomenon of underestimating core infarct size on CT perfusion in the later time period (>6 hours), which we have termed perfusion scotoma.

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American Journal of Neuroradiology: 43 (6)
American Journal of Neuroradiology
Vol. 43, Issue 6
1 Jun 2022
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Perfusion Scotoma: A Potential Core Underestimation in CT Perfusion in the Delayed Time Window in Patients with Acute Ischemic Stroke
K. Abrams, G. Dabus
American Journal of Neuroradiology Jun 2022, 43 (6) 813-816; DOI: 10.3174/ajnr.A7524

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Perfusion Scotoma: A Potential Core Underestimation in CT Perfusion in the Delayed Time Window in Patients with Acute Ischemic Stroke
K. Abrams, G. Dabus
American Journal of Neuroradiology Jun 2022, 43 (6) 813-816; DOI: 10.3174/ajnr.A7524
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