6

Lacunar stroke with 3 hours since last seen well

9

Large vessel occlusion with 9 hours since last seen well

CT perfusion

ASPECTS score

In which of the following cases is CT perfusion useful to guide treatment decisions?

What is the minimum NIHSS score required for formal thrombectomy indication?

3

Large vessel occlusion with 2 hours since last seen well and ASPECTS = 10

All of the options

Pre-stroke mRS

Which of the following criteria are considered in the Dawn trial to extend the thrombectomy treatment window beyond six hours?

No

No

Based on the neurological assessment, please rate the stroke severity:

Minor stroke

Occlusion of the A1 segment of the left ACA

Severe stroke

Is there a significant perfusion mismatch visible in the CTP?

No

Does this CT have signs of any intracranial hemorrhage?

Are there any contraindications for thrombolysis?

Yes

No

Moderate lesion. ASPECTS: 8

No occlusion is visible

Yes

Yes

Does this patient have an indication for thrombectomy?

No changes. ASPECTS: 10

Which vascular lesion is visible?

Based on the patient's clinical assessment and the head CT findings, select the most likely diagnosis:

Moderate stroke

Large infarct. ASPECTS: 5

Yes

Occlusion of the M1 segment of the left MCA

What is the extent of the established ischemic infarct in the CT scan?