I'm wondering if anyone has had success in diagnosing compression sites with a Neurography of the brachial plexus? I was told that it is ineffective because without compression the nerves have a normal appearance.

I have not been given an official diagnosis of TOS although I have been exhibiting all of the symptoms for more than a year. The thing that is keeping my docs hesitant to label me with the TOS diagnosis is because I did not have significant improvement of my symptoms with the botox injection to my anterior scalene and pec minor. Just wondering if it might help in the diagnosis and with treatment.