Image via Flickr user Reigh LeBlanc: http://www.flickr.com/photos/reighleblanc/3854685038/sizes/o/ Brain injuries are often referred to as “invisible injuries” due to the limitations of brain imaging technology. That may be changing with the advent of Diffusion MRI technology. In a study published in a recent issue of Neurology, researchers revealed that abnormalities from a mild concussion can be seen to linger up to four months after the actual …