ICAD Calculator

Based on Score-ICAD for pre-thrombectomy diagnosis of intracranial atherosclerotic disease

ICAD-Score

Calculate anterior or posterior ICAD scores using validated imaging and clinical variables.

Anterior Circulation Calculator

You are currently using the anterior ICAD calculator.

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% of strokes attributable to ICAD in your population

Adjust prevalence for your local population before selecting variables.

Selected prevalence 15%

Comorbidities

+5
+1
+1
+1
+1

Imaging Findings

+3
+2
+3
+3

Anterior score

Result

Total score 0
Estimated ICAD probability 15%

Cutoff Low

Minimal features selected.

Probability estimate is based on selected prevalence

Why use this slider?

Pre-test prevalence is the estimated baseline chance of ICAD before applying the score. Adjusting the slider changes the estimated probability, but it does not change the point total.

Example prevalence levels

  • General/default setting: use the study default
  • Higher-prevalence population: consider a higher estimate
  • Local practice setting: use your own observed rate if available

These are example starting points only and may vary by population, referral pattern, and practice setting.

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