Cerebral venous outflow in the prone position
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We have read with interest the paper by Tsutsumi et al.  about venous flow in cerebral sinuses in the prone position. Using MR imaging, they demonstrated an intriguing phenomenon—there was no flow in non-dominant transverse and sigmoid sinuses in the majority of individuals examined in the supine position, despite the fact that these sinuses were not occluded. In the prone position, flow through these sinuses was restored. The authors did not provide reasonable explanation for these findings. Importantly, until now, only a few studies on cerebral venous outflow in the prone position have been published [2, 3]. This problem—although of potential clinical relevance—is obviously understudied. Basing on our previous research on venous outflow from the brain, we would like to suggest a possible explanation for flow patterns described by Tsutsumi in the hope that it could provide useful framework for future studies in this field.
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Conflict of interest
The authors declare no conflict of interest.
- 4.Simka M, Latacz P (2019) Abnormal valves of the internal jugular veins: morphology, diagnostics and clinical relevance. In: Bennington EH (ed) Horizons in world cardiovascular research, vol 16. Nova Science Publishers, New York, pp 2–21Google Scholar
- 5.Zivadinov R, Marr K, Cutter G, Ramanathan M, Benedict RH, Kennedy C, Elfadil M, Yeh AE, Reuther J, Brooks C, Hunt K, Andrews M, Carl E, Dwyer MG, Hojnacki D, Weinstock-Guttman B (2011) Prevalence, sensitivity, and specificity of chronic cerebrospinal venous insufficiency in MS. Neurology 77:138–144CrossRefGoogle Scholar