I had to refresh my brain on the doppler test - I never have one
Doppler test info-
http://www.google.com/search?hl=en&c...OS&btnG=Search

so you have more of a vascular type of TOS { blood flow compressions}.
Could they tell if it was more artery or vein , or both equally.

Did they note at what angle or degree your pulse stopped at as they moved your arms around? PTs might have done this part.

It's just a good thing to know so if you can keep arms from those positions until the pain can get calmed down.

Do your armpits feel tight or puffy or sore at times , or all the time - that could be pec minor syndrome also a type of TOS.

Also the muscles and fascia can just plain get sticky as well as the problem of blood flow, they all interact with TOS.