Hi Aarcyn. Criteria is deformed, restricted, squashed, or plainly a vein that is much smaller in diameter then other side causing less flow like stepping on (cheap) garden hose. It just makes so much sense to my mechanical mind that if blood flow is reduced, oxygen is reduced, cells will die. So HBOT which i've read is standard procedure for MS (countries other then mine) works by increasing oxygen to the brain.

That's my guess. My first discussion asking/telling dr to order Doppler (1st step) is Monday. My regular Dr. Neuro I see end of August. He wanted a visit and is 70+ miles away.

I believe every single video and just spoke about it with o.r. nurse friend. Simple procedure. Surgeon in NY told me don't hesitate if you need it. Simple.