Neuroimaging – such as magnetic resonance imaging (MRI), computed tomography (CT) and positron emission tomography (PET) – is used to detect brain injury by obtaining the best possible images of the brain. It is also used to find the region of the brain that is damaged and the changes in behavior of the injured individual.

However, neuroimaging is not the only source of information for detecting brain injury. Neuropsychological and neurofunctional assessments are also usually administered.

Neuropsychological testing attempts to systematically measure a person's strengths and deficits in a variety of cognitive and behavioral areas. Neurofunctional assessments evaluate an individual's ability to perform everyday life activities, such as cooking, paying bills and following written directions.

By using a combination of methods (neuroimaging, neuropsychological testing and neurofunctional assessments), healthcare professionals can obtain the most accurate, detailed information about the person with brain injury.