Fig 1. Sample patient, group I (favorable outcome), scanned on day 3 after symptom onset. IS indicates involvement scale. Stroke onset zones are marked with arrows. A, 3D volume rendering (50% opacity) of DWI and superimposed bilateral CSTs. B, FiberTracking coregistered with coronal 2D DWI sections. C, Axial ADC map; D and E, axial DWI; F, axial FA map coregistered with 2D overlay of CST fibers (*, C and D). In this case, the ischemic lesion is lateral of the CST to its major extent; there is no CST involvement (IS = 0) and no fiber disruption. This 46-year-old man suffered from dysarthria and decreased fine motor skills of his right hand at the time of admittance. He was hospitalized for 5 days and symptom free in re-evaluation after 3 months.