Photo reproduced from Strauss SB, Kim N, Branch CA. Bidirectional Changes in Anisotropy Are Associated with Outcomes in Mild Traumatic Brain Injury. AJNR Am J Neuroradiol 2016 Jun 9. [Epub ahead of print]
This image of a concussion patient’s brain shows low FA areas (red) probably signifying injured white matter, plus high FA areas (blue) perhaps indicating more efficient white-matter connections compensating for concussion damage. A large amount of high FA predicts recovery from concussion.