Brain scans for PTSD

January 13, 2012 12:00:00 AM PST
Most U.S. troops have cleared out of Iraq and as they head stateside, a lot have trouble leaving the battlefield behind. PTSD is hitting troops hard and at any given time, more than 13 million Americans are affected by it. Now, for the first time ever, there could be a definitive way to find out who has it... and help treat it.