We have not done any angioplasties at our institution because we refuse to do them outside of a proper protocol. But Dr. Sandy McDonald, as I'm sure you're aware, has done seven cases, all of whom have shown improvement. I'm cautious here, in that the improvement was not identified by a blinded independent observer, which is what's necessary to do a proper study.
I have to comment on Dr. Lee's comment that they are evaluating the safety of the procedure. I beg to differ. What they are testing and funding testing of is not the procedure that is being advocated; rather, they're researching and funding research to see if venous disease is associated with MS. So if you're going to evaluate the efficacy and the safety of a procedure, you can't do it outside of actually doing the procedure and seeing whether it is safe.