VNC Reconstructions on Immediate Post-EVT DECT Best Correlate with Final Brain Infarction

On immediate post-EVT dual-energy CT, virtual non-contrast (VNC) reconstructions correlated best with final brain infarction (τ=0.63, P<.001). Mixed-energy and iodine map reconstructions showed weaker correlations (τ=0.47 and τ=0.23, respectively).

• VNC-ASPECTS had the strongest correlation with follow-up ASPECTS (τ=0.63, P<.001), outperforming mixed-energy (τ=0.47) and iodine map contrast extravasation (τ=0.23).
• For VNC-ASPECTS, sensitivity was 67%, specificity 85%, positive predictive value 86%, negative predictive value 74%, and accuracy 81%.

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