Transcranial brain photoplethysmography to study the venules of cerebral cortex in patients with multiple sclerosis
"Our study reveals that a minor increase in cerebral blood volume on the frontal cortex of both sides in sitting position is associated with a diagnosis of multiple sclerosis and might be a new marker."
From Dr. Zamboni, via Twitter "NIRS+Jugular compression clearly shows collateral circles activated in MS"
From Hubbard Foundation "Transcranial Brain Photoplethysmography, that measures microcirculation in capillaries and venules, was used over the frontal lobes before and after 10second compression of both int. jugular veins. Cerebral blood volume increase was 80.4% less in MS patients than normals, suggesting lower flow-pressure posssibly due to CCSVI."
http://phl.sagepub.com/content/30/2/119.abstract


Transcranial brain photoplethysmography to study the venules of cerebral cortex in patients with...
phl.sagepub.com
Objective To evaluate the utility of a transcranial brain photoplethysmography parameter as a potential marker for patients with multiple sclerosis.