The difference is real. A blinded study in 115 people, published in the American Journal of Neuroradiology, finds that people with MS have altered cerebral venous outflow--the difference value between supine and sitting positions on blood outflow of less than 503.24 was statistically associated with MS compared to other neurological disease and healthy controls. http://www.ncbi.nlm.nih.gov/pubmed/24610905


A Sonographic Quantitative Cutoff Valu... [AJNR Am J Neuroradiol. 2014] - PubMed - NCBI
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