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Imaging Shows Some Brains Compensate After Traumatic Injury

CHICAGO, Nov. 26, 2012 /PRNewswire-USNewswire/ -- Using a special magnetic resonance imaging (MRI) technique to image patients with mild traumatic brain injury (MTBI), researchers have identified a biomarker that may predict which patients will do well over the long term, according to a study presented today at the annual meeting of the Radiological Society of North America (RSNA).

The results of the study showed that in some patients the brain may have changed to compensate for the damage caused by the injury.

"This finding has huge potential implications for preventing and repairing the damage that accompanies traumatic brain injury," said Michael Lipton, M.D., Ph.D., associate director of the Gruss Magnetic Resonance Research Center at the Albert Einstein College of Medicine and medical director of MRI at the Montefiore Medical Center, Bronx, N.Y.

According to the Centers for Disease Control and Prevention, each year in the U.S. 1.7 million people sustain traumatic brain injuries. MTBI, or concussion, accounts for at least 75 percent of all traumatic brain injuries. Following a concussion, some patients experience a brief loss of consciousness. Other symptoms include headache, dizziness, memory loss, attention deficit, depression and anxiety. Some of these conditions may persist for months or even years in as many as 30 percent of patients.

Dr. Lipton and colleagues set out to determine the post-concussion symptoms and health-related quality of life for a group of patients with MTBI one year post-injury. The researchers recruited 17 patients with MTBI from the Emergency Department of Montefiore Medical Center. Within two weeks of their injury, the patients underwent diffusion tensor imaging (DTI), which measures the direction of movement of water molecules within and along axons, which comprise the bundles of nerve fibers in the brain's white matter.

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