Is CT-Based Perfusion and Collateral Imaging Sensitive to Time Since Stroke Onset?

Front Neurol · 2015 · PMC4391339 · PMID 25914673

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showed a trendno p-value reported

Discussion Our quantitative analysis, using CBF and MTT thresholds derived from published literature, showed a trend for a relationship of penumbra fraction with time, in the expected negative direction.

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a statistical trendno p-value reported

Penumbra fraction derived using a CBF threshold, i.e., Pen CBF correlated showing a statistical trend, although non-significantly, with time since stroke onset (Kendall’s tau- b = −0.196, p = 0.055).

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