Peter Gloviczki, MD at Mayo Rochester is one of the authors, along with Dr. Zamboni, of the consensus document on the diagnosis and treatment of venous malformations of the International uni0n of Phlebology. I have not looked at the document. The title is not CCSVI specific, though I was led to the document in that context so I "assume" that it is related.
Here is his contract info. If he wasn't the one reading your u/s, maybe you can see if he would given the collaborative nature of Mayo.
Division of Vascular and Endovascular Surgery, Department of Surgery, Mayo Clinic College of Medicine, Director, Gonda Vascular Center, Mayo Clinic, Rochester, MN, USA;
The Mayo Clinic Gonda Vascular Center is devoted to providing state-of-the-art diagnosis and treatment in a compassionate environment for patients with vascular diseases.