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Longitudinal findings on FLAIR relative to time after contrast injection. (A) Example of a patient with TME but without ECSAS; (B) Example of a patient with TME and with ECSAS. Comparison of (i) the immediate post-contrast FLAIR at 6 min, (ii) the delayed post-contrast FLAIR at 2 h and (iii) the FLAIR at 7 days demonstrates that the contrast enhancement seen in TME and ECSAS on the day of injury is absent 1 week after contrast injection.
