I don't know, I've seen multiple sources claim that non schizophrenics can have scans that closely resemble schizophrenic brains, yet lack most or all symptoms (although these typically aren't completely normal people, they don't meet the criteria).

The problem is that exact relationships between the symptoms and the observable abnormalities have not been made at all, and that is not good enough to be considered of end-user scientific or medical value (beyond research).

Beast case scenario I've seen is with neuropsychiatrists that can more accurately prescribe medications based on scans due to being more informed---still, this amounts to slightly more "educated guesses."