I don't think one test (ie. MRA) can rule TOS in or out. It's a compilation of things and even then, do they really know what TOS is?

Many non-symptomatic people have compression of their arteries and veins in arms-up postures. What is normal compression in all of us? As far as I know, this has yet to be determined.

Unless there is something catastrophic going on, I'd never base surgery off of a fancy 3D MRA/MRN. I've known a few "deemed" slam-dunk surgical cases with this test and their result turned out on the negative side.

Loulou: You need to move on and find a new Doctor. "Maybe come back when your hand gets weak." Loser! Good luck to you and don't let them have you strengthen or your problems will only grow worse. Hand that theraband right back and walk out the door.