Magnetic Resonance Imaging machines stateside allow medical staff to get a better look at tissue in the human body, including the brain. Petty Officer Peggy Trujillo tells us how the M.R.I. trailer in Kandahar, Afghanistan is helping doctors conduct a study that will help exlain more about traumatic brain injury. Soundbites include LCDR. Maria Barefield - Officer in charge, Concussion Specialty Care Center and SGT. Christopher Giannetti - Occupational Therapy Assistant, Warrior Recovery Center. Produced by MC1. (SW/AW) Peggy Trujillo. Also available in High Definition.