Hi Mark,

Thanks for your response and for catching the issue with the name... wicked sleep disturbance last night so today I'm very off.

Regarding the water diffusion, you're correct. Differences in the water diffusivity relate to axonal damage, which can be the axons themselves or the myelin sheath. With mTBI, the myelin sheath can be repaired whereas in moderate and severe TBI it evidently doesn't.

For me, I'm interested in having a DTI scan done for 2 reasons:

I. My employment is 100% intellectual, and therefore any brain damage has implications in my return to work;

ii. I've been attributing my PCS issues with an inability to process external stimuli. Recently, through this forum, I learned this is called "mental flooding". Despite what I've reported to several doctor's, the only thing they state is that ongoing depression, which I disagree that I have at this point, is the cause of my problems. Having info from the DTI will let me accept/refute and, ultimately, come to terms with what the new "me" is. Not sure this will be understandable, but it's something I feel I need to move forward regardless of what the results will be.

Thanks for the info on the facilities I'll check them out over the next couple days.