I just had my cat scan angiogram at Massachusetts General Hospital. I wanted to know for those who had it done there, were your arms resting at your sides? I was surprised because my arms were resting at my sides and I thought (through conversation with Dr. Donahue's nurse) I would have had one arm above my head to reproduce the compression symptoms associated with TOS. The nurse who setup the IV in my arm for the CTA assured me that the "arms down position" was the typical Dr. Donahue protocol. I was kinda disappointed because I've had MRAs/MRVs of the neck and chest in the past with the arms down and of course they found signs zero signs of compression so wouldn't the CTA with the arms down at the sides be no different? Just to point out the obvious, arms down I have no symptoms and arms elevated I have symptoms. Thanks!