AI in Stroke Detection and Neurology Quiz

Answers and explanations appear as you take the quiz.

1. In stroke care, what does LVO stand for?
   • Low ventricular output
   • Lateral vision obstruction
   • Large vessel occlusion
   • Localized vascular overflow
2. How do computer-aided triage and notification (CADt) tools fit into the stroke workflow?
   • They run in parallel with the radiologist's read and alert the stroke team to suspected cases
   • They replace the radiologist's diagnostic read
   • They perform the thrombectomy procedure
   • They only analyze scans after treatment is complete
3. What was notable about CMS's 2020 decision on Viz.ai's software?
   • It banned AI stroke tools
   • It required every hospital to buy the software
   • It classified the software as a drug
   • It granted a new technology add-on payment, the first for an AI tool
4. What did the DAWN and DEFUSE 3 trials show?
   • AI can replace neurologists
   • Some patients benefit from thrombectomy up to 24 hours after onset when imaging shows salvageable tissue
   • Thrombectomy is never useful after 6 hours
   • CT scans are unnecessary for stroke
5. If a CADt tool misses a stroke on a scan, what does that mean?
   • The patient definitely does not have a stroke
   • The scan is deleted
   • The patient is discharged automatically
   • The case follows the normal reading workflow; stroke has not been ruled out
6. Which occlusions are generally harder for LVO detection models to find?
   • Distal branch occlusions
   • Internal carotid artery occlusions
   • M1 segment occlusions of the middle cerebral artery
   • All occlusions are equally easy
7. What can distort the core and penumbra volumes estimated by perfusion software?
   • Using a mobile viewer
   • The time of day the scan is taken
   • Patient motion or poor contrast bolus timing
   • Sending alerts to the stroke team
8. How do algorithms help in epilepsy care, according to the guide?
   • By performing brain surgery
   • By helping review long EEG recordings and flagging suspected seizures
   • By prescribing anti-seizure medication automatically
   • By replacing MRI scans