pc-ASPECTS (Posterior Circulation Acute Stroke Prognosis Early CT Score)
Scores posterior circulation ASPECTS from 10 by subtracting points for each region with early ischemic change.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Left thalamus
- Early ischemic change
- Right thalamus
- No early ischemic change
- Left cerebellar hemisphere
- No early ischemic change
- Right cerebellar hemisphere
- No early ischemic change
- Left PCA territory
- No early ischemic change
- Right PCA territory
- No early ischemic change
- Midbrain
- No early ischemic change
- Pons
- Early ischemic change
Result: pc-ASPECTS 7/10, early ischemic change in the left thalamus, pons: in the 0 to 7 group, which the original study on CT angiography source images linked to a lower chance of a good outcome.
The tool opens with these values already filled in. Replace them with your own.
What you enter
- Left thalamus
- Right thalamus
- Left cerebellar hemisphere
- Right cerebellar hemisphere
- Left PCA territory (occipital lobe)
- Right PCA territory (occipital lobe)
- Midbrain
- Pons
How this is calculated
Citation
Puetz V, Sylaja PN, Coutts SB, et al. Extent of hypoattenuation on CT angiography source images predicts functional outcome in patients with basilar artery occlusion. Stroke. 2008;39(9):2485-2490. Weights as tabulated by Lu WZ et al, PLoS One 2021, and Garg R, Biller J, Front Neurol 2017. Read the sources: Puetz 2008 ↗, Lu 2021 ↗, Garg 2017 ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.