What is the functional outcome score for basilar artery thrombosis?

Updated: Jan 11, 2019
  • Author: Salvador Cruz-Flores, MD, MPH, FAHA, FCCM, FAAN, FACP, FANA; Chief Editor: Helmi L Lutsep, MD  more...
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The posterior circulation Acute Stroke Prognosis Early CT Score (pc-ASPECTS) with CT Angiography Source Images (CTASI) is a predictive scale of functional outcome in patients with basilar artery thrombosis.

Pc-ASPECTS allocates 10 points to the posterior circulation. One point each is subtracted for hypoattenuation on CTASI in the left or right thalamus, cerebellum, or posterior cerebral artery territory, respectively, and 2 points each are subtracted for hypoattenuation on CTASI in any part of the midbrain or pons. A pc-ASPECTS score of 10 indicates absence of visible posterior circulation ischemia; a score of 0 indicates hypoattenuation in all pc-ASPECTS territories.

The CTASI pc-ASPECTS score can identify patients with basilar artery thrombosis who will have a poor clinical outcome despite recanalization. [10]

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