FIG 1. Tracing method for the VOIs. The infarct was outlined on isotropic DWI, section by section, by using a free-hand method. On each section, the ROI was flipped about the vertical axis and placed in the same location on contralateral normal side to obtain a mirror-image ROI. All section ROIs were combined to provide one stoke and one contralateral normal VOI for each patient. All VOIs were projected onto inherently coregistered echo-planar T2WIs, FA maps, and ADC maps. Top left, Isotropic DWI. Top right, Echo-planar T2WI. Bottom left, FA map. Bottom right, ADC map.