Figure 3From: Small internal jugular veins with restricted outflow are associated with severe multiple sclerosis: a sonographer-blinded, case–control ultrasound study Total bilateral blood volume flow (BVF) in the smaller IJV of MS patients. Scatterplot of the BVF (mL/min) relative to the mean BVF in the smaller IJV in the supine position among A ) small IJV-positive MS patients and small IJV-negative MS patients, p = 0.001*; B ) MS patients with EDSS < 6 and EDSS ≥ 6, p = 0.04*.Back to article page