Cerebral Circulation Time is Prolonged and Not Correlated with EDSS in Multiple Sclerosis Patients: A Study Using Digital Subtracted Angiography:
http://journals.plos.org/plosone/article?id=10.1371%2Fjournal.pone.0116681
From Dr. Zamboni, via Twitter "Cerebral Circulation time is double in multiple sclerosis respect to normality: next challenge is the role of veins":
https://twitter.com/zambo57/status/566751477365235713
FULL PDF: http://www.plosone.org/article/fetchObject.action?uri=info%3Adoi%2F10.1371%2Fjournal.pone.0116681&representation=PDF