Advanced Imaging Tools in the Study of Mild Traumatic Brain Injury

We will recruit mTBI subjects and control subjects. Each subject will undergo the set of
imaging modalities, and the results will be analyzed for differences at the structural,
physiological, and molecular levels. The long term goal of this research is the development
of a method to diagnose mTBI based on physical markers. This is a phased project beginning
with a pilot study followed by future studies with larger sample sizes.

Inclusion Criteria:

Study group:

- Between 18 and 55 years of age inclusive.

- Potential participant verbally verifies diagnosis of mTBI at pre-screen.

- Diagnosed with mild traumatic brain injury by a VAMC physician according to standard
diagnostic criteria [12],[13], to be verified by chart review.

- Less than 24 months from trauma resulting in mTBI.

- Able to read and write in English.

- Willingness to refrain from nicotine, and beverages containing either alcohol or
caffeine for at least four hours prior to the imaging session.

- Have signed the consent form for the study.

Control Group:

- Between 18 and 55 years of age inclusive.

- Potential participant verbally denies history of mTBI at pre-screen.

- Able to read and write in English.

- Willingness to refrain from nicotine, and beverages containing either alcohol or
caffeine for at least four hours prior to the imaging session.

- Have signed the consent form for the study

Exclusion Criteria:

- Conditions that would preclude the completion of a MRI, PET, or CT exam such as
claustrophobia, pacemaker, metal objects in body, and/or pregnancy.

- Serious, unstable medical or mental illness.

- Medical contraindication to any element of the study procedure.

- Have not read and signed an informed consent form, or do not understand its contents.