ModulePublishedclinician-educationstroke-escalationimaging

Stroke imaging basics (CT/CTA/CTP/MRI) — what each answers

Acute stroke imaging is a sequence of specific questions. This module explains what non-contrast CT, CTA, CT perfusion, and MRI each answer, and how they drive reperfusion decisions.

ClinicianClinicianAdvanced24 minGrade 11

Educational only

Educational only — not medical advice.

Get help now

If a patient develops new or worsening stroke symptoms, reduced consciousness, seizure, severe headache, airway/swallowing danger, or unstable vital signs, activate emergency response and follow local stroke escalation protocols.

Key takeaways

  • State the specific question each acute stroke study answers
  • Explain why non-contrast CT comes first
  • Relate imaging findings to reperfusion decisions

Why this matters

Content outline is being prepared for review.

Clinical frame

Content outline is being prepared for review.

Core clinical idea

Content outline is being prepared for review.

Assessment and workup

Content outline is being prepared for review.

Clinical reasoning pathway

Content outline is being prepared for review.

Management and team actions

Content outline is being prepared for review.

Common pitfalls

Content outline is being prepared for review.

Patient-safe explanation

Content outline is being prepared for review.

Escalation and safety signals

Content outline is being prepared for review.

Applied case

Content outline is being prepared for review.

Clinical scenario

Content outline is being prepared for review.

Common misconceptions

Content outline is being prepared for review.

Reflect

Content outline is being prepared for review.

Key takeaways

  • Each study answers one question: CT (hemorrhage?), CTA (LVO?), CTP (core vs penumbra?), MRI/DWI (early ischemia?).
  • Advanced stroke care requires reconciling the clinical syndrome with timing, imaging, medication risk, patient context, and local pathway capacity.
  • A safe plan names escalation thresholds, responsible clinicians, patient-facing instructions, and the next step if results or symptoms change.

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.

0 of 4 answered

Question 1

1. A learner is applying this lesson on Stroke imaging basics (CT/CTA/CTP/MRI) — what each answers. Which approach best reflects advanced clinical reasoning?

Question 2

2. Which actions show safe handling of Stroke imaging basics (CT/CTA/CTP/MRI) — what each answers? Select all that apply.

Question 3

3. Place the safe clinical sequence for Stroke imaging basics (CT/CTA/CTP/MRI) — what each answers in order.

Question 4

4. For Stroke imaging basics (CT/CTA/CTP/MRI) — what each answers, a normal or non-specific early test result is enough to stop reassessment when the clinical syndrome still suggests risk.

References

  1. Tier 2RadiologyInfo.org2025
    CT Angiography of the Head
  2. Tier 2RadiologyInfo.org2025
    Magnetic Resonance Imaging (MRI) - Head
  3. Tier 1American Heart Association/American Stroke Association2019
    Guidelines for the Early Management of Patients With Acute Ischemic Stroke: 2019 Update