Alberta stroke program early CT score (ASPECTS)

Calculator

When to use

Ischemic changes

Subcortical structures: caudate

Subcortical structures: internal Capsule

Subcortical structures: lentiform nucleus

MCA cortex: insular ribbon

MCA cortex: anterior MCA cortex M1)

MCA cortex : MCA cortex lateral to the insular ribbon M2)

MCA cortex : posterior MCA cortex M3)

MCA Cortex : anterior cortex immediately superior to M1

MCA Cortex : lateral cortex immediately superior to M2

MCA Cortex : posterior cortex immediately superior to M3

Calculation

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The Alberta Stroke Program Early CT Score (ASPECTS) is a clinical calculator used in the field of neurology, specifically for patients who have suffered an acute ischemic stroke. This scoring system is used to quantify the extent of early ischemic changes on computed tomography (CT) scans of the brain. The ASPECTS score is particularly useful in determining the eligibility of patients for acute stroke interventions such as thrombolysis or thrombectomy. It helps clinicians to predict the potential benefits and risks of these interventions, by estimating the size of the ischemic core and the remaining salvageable brain tissue. The score ranges from 0 to 10, with lower scores indicating more extensive ischemic changes. There are no specific exclusion criteria for its use, but it is less applicable in hemorrhagic stroke or in patients with previous significant brain pathology that may confound the interpretation of the CT scan.

Reference

P A Barber, A M Demchuk, J Zhang et al. Validity and reliability of a quantitative computed tomography score in predicting outcome of hyperacute stroke before thrombolytic therapy. ASPECTS Study Group. Alberta Stroke Programme Early CT Score. Lancet. 2000 May 13;355(9216):1670-4.

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