Neurology · Emergency Medicine · Radiology

Alberta Stroke Program Early CT Score (ASPECTS) calculator

Enter the published formula inputs below to calculate and interpret this score.

Clinical inputs

Number of MCA regions with early ischemic change

Allowed range: 0–10

Caudate, lentiform, internal capsule, insular ribbon, M1–M6; enter count 0–10

Result

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Clinical inputs

Number of MCA regions with early ischemic changeAccepted range: 0 to 10

Primary source

Barber PA et al. Validity and reliability of a quantitative computed tomography score in predicting outcome of hyperacute stroke before thrombolytic therapy. Lancet. DOI: 10.1016/S0140-6736(00)02237-6. PMID: 10905241. Scope: MCA territory divided into 10 regions; ASPECTS starts at 10 and subtracts 1 per region with early ischemic change. (2000)

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