The degree of axonal injury, a form of damage to the white matter connections in the brain, is key to how well someone will recover function after a brain injury. However, it is hard to quantify axonal injury and assessments remain limited. Diffusion tensor imaging is an advanced imaging technique which can be analysed to provide a quantitative measure of axonal injury. In most cases, diffusion imaging is used in research settings to test differences in groups, but using new methodology refined by Professor David Sharp and his team, we can now assess for the presence of axonal injury in large white matter tracts in individuals.