Positron emission tomography
Although the diagnosis of CTE cannot be determined by imaging, the effects of head trauma may be seen with the use of structural imaging. Imaging techniques include the use of magnetic resonance imaging, nuclear magnetic resonance spectroscopy, CT scan, single-photon emission computed tomography, Diffusion MRI, and Positron emission tomography (PET). One specific use of imaging is the use of a PET scan is to evaluate for tau deposition, which has been conducted on retired NFL players.