That’s very frustrating for you, I presume that they’re looking to see changes in the time since surgery, but if he wants a CT venogram with manometry then this isn’t without risks, & even a standard CT with contrast is more radiation again, so I understand your concerns… especially as the facility didn’t know what they were doing before!
Dr. Andrew Ducruet, cerebrovascular surgeon at Barrow has been mentioned in another discussion by @avarj :
Update from Arizona at Barrow Institute of Neurology and Dr. Nakaji’s Office - General - Living with Eagle
I don’t know much about him, it was recent, so whether seeing him might be an option?
Hopefully others will chip in with suggestions too 
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