Researchers found that MRI scan can be used to estimate a person’s age with a maximum error of one year.

It is possible that this method of age estimation might be sensitive to developing abnormality of the brain and also assist in our understanding of conditions like autism and attention deficit hyperkinetic disorder. There is a possibility that such data could be used in the court of law to make sure that a person with a brain age of a minor should not be tried as an adult.
The age of the participants included in the study is limited. It remains to be seen if these findings could be extended over wider age groups.
The study is thus a landmark study that would help researchers better understand how our brain can reveal our age.
Reference:
1. http://www.abc.net.au/science/articles/2012/08/17/3569308.htm
2. http://www.sciencedaily.com/releases/2012/08/120816121954.htm
Source-Medindia