A guideline just lowered the imaging bar for stroke thrombectomy — and most of the affected hospitals are rural.
The 2026 AHA/ASA acute ischemic stroke guideline (Stroke, Jan 2026) now has a neuroradiology field guide: a focused review in AJNR (Jun 4) translating it into imaging-workflow terms.
What changed for imaging teams
→ Perfusion is no longer the gatekeeper. Hospitals without CT perfusion can use the ASPECTS score on non-contrast CT to select thrombectomy candidates. CT angiography remains the Class 1 requirement for confirming large-vessel occlusion — but the advanced-perfusion barrier is gone.
→ 25-minute scan target. Initial brain imaging within 25 minutes of arrival to separate ischemic stroke from hemorrhage.
→ Windows extended to 24 hours for selected patients — including some large-core and posterior-circulation cases — when imaging shows salvageable tissue.
→ Medium-vessel occlusion: expanded guidance, but no routine thrombectomy recommendation yet — the evidence base is still thin.
Why it matters
→ Access. The hospitals without perfusion infrastructure are disproportionately rural and community EDs — the sites furthest from the angio suite. Simplifying selection is, quietly, an equity move.
→ Operations, not slogans. A 25-minute target plus the goal of cutting 30–60 minutes of system delay turns “time is brain” into a measurable systems problem — from the 9-1-1 call to door-in-door-out.
→ The bottleneck moves from hardware to interpretation. When selection hinges on scoring an NCCT well and fast, the constraint shifts to standardized, consistent reads — exactly where decision support and quality programs operate. The guideline’s emphasis on mobile stroke units and transfer networks points the same way.
#StrokeCare #Neuroradiology #StrokeAI #RuralHealth #Telestroke #MedicalImaging #HealthEquity #Thrombectomy