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Abstract #0591

Rate of FLAIR signal evolution depends on depth of ischemia and time: predicting ischemia age

Hongyu An 1 , Andria L Ford 2 , Yasheng Chen 1 , Katie Vo 3 , William Powers 4 , Jin-Moo Lee 2 , and Weili Lin 1

1 Radiology and BRIC, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States, 2 Neurology, Washington University in St. Louis, St. Louis, MO, United States, 3 Radiology, Washington University in St. Louis, St. Louis, MO, United States, 4 Neurology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States

Rates of FLAIR change depends on both time from stroke onset and depth of ischemia. Lesion age prediction is more reliable in moderate to severe ischemia. The median absolute prediction error on ischemia age is ~1hour across all patient using a generalized linear model.

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