Thank you.
I think you need to do the ultrasound imaging that Sandy has talked about, but you need to do the MR imagining as well. We have discovered that there are many different sources for CCSVI, and not just narrowed vessels. Sometimes there are bad valves, and sometimes extra material called septum inside the vessels causes a problem. In other cases bones have grown too big and have compressed the vessels. There are many things that can cause CCSVI, so to understand why this treatment might work for some people and not for others one needs to know what the problem is. In order to do that you have to get experience in imaging people.
This can be accomplished at almost any MR site or ultrasound site in Canada. My recommendation is to always do both. It gives you more information. Sometimes we see things better on MR than ultrasound, and sometimes it's the other way around. That can be done in Canada today. There are protocols out from Zamboni for ultrasound and from our group for MR that make this possible. So in order to really follow the surgical results and do a good double-blind study, you need to have an understanding of what the source itself is.