Patients suspected of CCSVI (chronic cerebrospinal venous insufficiency) may be tested and if appropriate treated with catheter venoplasty by an interventional radiologist in their local community who has been credentialled either by the local hospital's IRB or a national IRB if the procedure is done in an outpatient facility. Catheter angioplasty is a long-established and accepted medical procedure, patients' insurance should but may not cover the testing or treatment.