Study To Evaluate Treating Chronic Cerebrospinal Venous Insufficiency (CCSVI) in Multiple Sclerosis Patients

Inclusion Criteria: * Must be 18 years old or greater and less than or equal to 65 years of age * Score of 0 to 7 on the EDSS scale * Diagnosis of relapsing remitting or secondary progressive Multiple Sclerosis by a neurologist and confirmed by one of the independent study neurologists * Presence of greater than or equal to 50 percent stenosis of the extracranial veins as determined by venogram * Informed consent signed by patient Exclusion Criteria: * Patient is unwilling to comply with the follow up * Patient is pregnant * Diagnosis of primary progressive MS by a certified neurologist confirmed by one of the study neurologists * Presence of less than 50 percent stenosis of the extracranial veins as determined by venogram * Presence of other medical illnesses or a psychiatric condition that in the opinion of the investigator may cause the subject to be non-compliant with the protocol requirements * Life expectancy is less than one year * Lack of mental capacity to consent * Creatinine level of greater than 2.5 or is dialysis dependant * Enrollment in another clinical study