Percent differences from the contralesional cortex were calculated for T2, ADC, FA, and cortical CBF in vehicle-, acute (1–3 h), and delayed (24 h) MB-treated groups after traumatic brain injury (n=10 per group,±standard error of the mean). MB, methylene blue; ADC, apparent diffusion coefficient; FA, fractional anisotropy; CBF, cerebral blood flow.