Alberta Stroke Program Early CT Score — tap each MCA-territory region showing early ischemic change.
Ganglionic level — tap if abnormal
Supraganglionic level
10 / 10
No regions marked — normal CT (ASPECTS 10).
Apply to the MCA territory on non-contrast CT in acute ischemic stroke; 1 point is subtracted for each region with early ischemic change. ASPECTS ≤7 suggests a larger infarct / worse outcome. Decision support only — not a substitute for clinical judgment.
Barber PA, et al. ASPECTS. Lancet. 2000;355(9216):1670–1674.