ModuleDraftEmergency
Study module: stroke imaging basics (CT/CTA/CTP/MRI) — what each answers
Study module explaining what each imaging modality is used for in acute stroke pathways: noncontrast CT, CTA, perfusion imaging, MRI (DWI/FLAIR) at a conceptual level.
ClinicianClinicianAdvanced30 minClinical (pro)
Educational only
Educational only — imaging choices follow local protocols and specialist judgment.
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If acute stroke is suspected: activate local stroke alert/emergency response immediately. Imaging selection should follow protocol and should not delay time-critical treatment pathways.
Key takeaways
- Explain what noncontrast CT answers first
- Explain what CTA adds (LVO identification)
- Describe what perfusion imaging aims to estimate (tissue at risk)
- Describe MRI DWI/FLAIR roles in timing/diagnosis (high level)
Noncontrast CT
- Rule out hemorrhage
- Early ischemic change concept
CTA
- Large vessel occlusion
- Vessel anatomy
Perfusion imaging (CTP/MRP)
- Estimate tissue at risk
- Selection support in some pathways
MRI (high level)
- DWI for acute ischemia
- FLAIR for timing context
Exam pearls
- Match modality to question
- Don’t delay workflow
Practice check
What you’ll practice
These questions are untimed. After you answer all of them, you’ll see your score and a clear next lesson or reference step.
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