via Sandro Rasman - ITALIAN SOCIETY FOR ANGIOLOGY AND VASCULAR MEDICINE Updating the Chronic Cerebrospinal Venous Insufficiency

Final Conclusions:
'The interactive discussion that concluded the training course, pointed out that the training of the diagnostician is the crux of the recognition of CCSVI and where even today, in all published studies, the frequency of the diagnosis made in different laboratories varies between zero and fifty percent is a sign that the training of operators is less than good. This is not surprising. Over thirty-five years ago the same thing happened for the evaluation of carotid stenosis. For CCSVI, also, other two elements increases the complexity of the diagnosis. The US examination of the venous system is, in all districts, more difficult than the blood, where the high pressure gradient makes it easy compared to a low-pressure system and high capacitance. The second difficulty is related to the still inadequate knowledge on the pathophysiology of cerebral venous return and its regulation.'
http://www.siapav.it/angionews/updating-sulla-insufficienza-venosa-cerebro-spinale-cronica-ccsvi/