Fig. 3

Data, mesh, and magnetic resonance image pre-processing. a The age-matched atlas mesh is affine transformed to the infant’s head coordinates; b the infant’s stroke mask is created and combined with the affine-transformed mesh to determine the region of interest (ROI); c the labeled mesh is combined with a light simulation to determine d, which channels overlap by at least 10% with the stroke ROI (red). The symmetric healthy channels are subsequently identified (blue) and channels with a signal-to-noise ratio <5 are excluded (dark gray). Representative examples of steps a–d are shown for Stroke_4. A anterior, P posterior, R right, L left