Wow, I had thought TBI's could only be diagnosed on autopsy, but I guess that's CTE which is different. Does CTE mean lingering effects from TBI's? Can TBI's

Wow, I had thought TBI's could only be diagnosed on autopsy, but I guess that's CTE which is different. Does CTE mean lingering effects from TBI's? Can TBI's if treated early enough be prevented from leading to CTE?