Here are the NICE/NHS guide lines for venoplasty for CCSVI in the UK. NICE recommends this treatment in studies.
"NICE encourages further research on percutaneous venoplasty for CCSVI for MS, in the form of robust controlled clinical trials. Studies should clearly define selection criteria and patient characteristics. They should also clearly define technical success which may include measurement of pressure gradients across treated vein segments before and after venoplasty. Outcomes should include clinical and quality of life measures."


http://www.nice.org.uk/nicemedia/live/13064/58610/58610.pdf
www.nice.org.uk