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Interpreting CT perfusion isn’t just about volumes and colors — it’s about understanding what’s happening physiologically in real time. In this Alaska Stroke Coalition & RapidAI Virtual Symposium session, Dr. Greg Albers delivers a masterclass on reading CTP maps, identifying stroke mimics and “chameleons,” evaluating collaterals, and using perfusion data to guide transfers and treatment decisions across long-distance, resource-limited settings. He walks through: How CTP differentiates true strokes vs. mimics (e.g., seizure, migraine, functional disorders) How to spot dangerous chameleons like basilar artery thrombosis How to use Tmax, CBF, CBV, and MTT together for accurate interpretation Why collateral quality predicts infarct growth—and which CTP markers actually matter When CTP reveals a diagnosis even when non-contrast CT and CTA are normal How perfusion helps rural hospitals avoid unnecessary transfers Why community hospitals can and should use CTP, even without local expertise How AI enables specialists in Anchorage to review CTP instantly from distant sites Following the presentation, a multidisciplinary panel—EMS leaders, flight nurses, stroke program managers, and neurologists—unpack several real-world stroke cases, including: Complex migraines that look like stroke Cerebellar strokes misdiagnosed as benign vertigo Anterior cerebral artery strokes presenting as isolated leg weakness How CTP changed the pathway in each case 👉 Who this is for: Neurologists, radiologists, ED teams, EMS, flight nurses, and rural hospitals seeking practical, real-world strategies for improving stroke triage and diagnostic accuracy. 00:00 — Intro 00:33 — Why CT Perfusion Matters 01:04 — Stroke Mimics on CTP 02:52 — Stroke “Chameleons” 05:00 — Understanding Perfusion Maps (Tmax, CBF, CBV, MTT) 10:00 — Collaterals: HIR, CBV Index 15:00 — The Golden Hour & CBF Thresholds 18:00 — Technical Pitfalls & Motion Artifacts 21:00 — Acute vs. Chronic Occlusions 24:00 — Case Review: Seizure vs Stroke 27:00 — Case Review: Visual Loss & PCA Stroke 31:00 — Case Review: Vertigo vs Cerebellar Stroke 36:00 — Case Review: Isolated Leg Weakness (ACA Stroke) 41:00 — Why Rural Hospitals Should Use CTP 45:00 — Panel Discussion . RapidAI This is AI beyond the algorithm™. . Connect with RapidAI Check out our website: https://www.rapidai.com/ Like us on Facebook: @RapidAI Follow us on LinkedIn: @RapidAI Follow us on X: @RapidAI