FIGURE 1.

Left cingulum bundle in a child with orthopedic injury (OI) and traumatic brain injury (TBI). Diffusion tensor imaging (DTI) tractography overlaid on a sagittal T1-weighted image for a 13-year-old child with OI compared with an age- and gender-equivalent child with TBI. Despite the lack of focal or diffuse injury in the TBI child at this level, DTI tractography illustrates the marked difference in the density, length, and brightness of the “fiber” streamlines (indications of decreased fractional anisotropy [FA] and/or increased apparent diffusion coefficient [ADC]) in this participant