Brain imaging technology advances at a rapid pace. A new process, called "high definitiion fiber tracking," reveals areas of brain injury with more exactness than standard scans such as CT & MRI and even the newer DTI method.

Millions of Americans suffer a traumatic brain injury, or TBI, each year. Most TBIs are concussions or

When a head is twisted violently, such as in a car crash, microscopic brain structures, called axons, can tear.  The damage to the brain is a called a "diffuse axonal injury," or DAI.  When the axons tear, chemicals that were contained in those structures can leak into the brain tissue.  The torn axons and chemicals in the brain tissue