DTI is a special kind of DWI. The MRI software that can do DWI should be able to do DTI.

I am skeptic about many sports concussion clinics. Most football oriented treatment is about deciding return to play and not as much the long term struggles. I've learned to never assume expertise. I've seen too many doctors talk a good story but fall short.

I suggest you try to get some understanding about her objectives with imaging and such.