The International Society for Neurovascular Disease is a non-profit professional association devoted to furthering the development of research for neurovascular related diseases - including those of the extracranial venous system that may contribute to development of chronic cerebrospinal venous insufficiency (CCSVI). The society holds annual scientific meetings and sponsor educational and scientific workshops. Target medical groups include, but are not limited to, Vascular Surgeons, Interventional Radiologists, Neurologists, Neurosurgeons, Physicists, and Technologists.