Meeting Banner
Abstract #1053

FLAIR-based estimation of the stroke onset time: a magnetic field dependent study

Tao Jin1
1Department of Radiology, University of Pittsburgh, Pittsburgh, PA, United States

Stroke onset time is a prerequisite for thrombolytic treatment but is unknown in ~25% of acute ischemic stroke patients. A fluid-attenuated inversion recovery (FLAIR)-based MRI index (e.g., DWI-FLAIR mismatch) has been suggested as a surrogate to determine whether the stroke duration is within the treatment window. In this work, we showed that the time when a positive FLAIR contrast appears between ischemic and normal tissue increases with B0, and is dependent on the imaging parameters. Therefore, FLAIR-based studies of stroke onset should be designed or interpreted with care.

This abstract and the presentation materials are available to members only; a login is required.

Join Here