Common: 200 000 TC/an, 12 000 death Neuroimaging plays a critical role in the evaluation of patients with traumatic brain injury CT: first-line of imaging MR imaging being recommended in specific settings MR imaging DTI, blood oxygen level–dependent fMRI, MR spectroscopy, perfusion imaging are of particular interest in identifying further injury CT and MRI are normal, as well as for prognostication in patients with persistent symptoms