orbital subarachnoid space measurement

Non-invasive intracranial pressure estimation by orbital subarachnoid space measurement: the Beijing intracranial and intraocular pressure (iCOP) study

Authors: Xie X, Zhang X, Fu J, Wang H, Jonas JB, Peng X, Tian G, Xian J, Ritch R, Li L, Kang Z, Zhang S, Yang D, Wang N.

INTRODUCTION: The orbital subarachnoid space surrounding the optic nerve is continuous with the circulation system for cerebrospinal fluid (CSF) and can be visualized using magnetic resonance imaging (MRI). We hypothesized that the orbital subarachnoid space width (OSASW) is correlated with and can serve as a surrogate for intracranial pressure (ICP). Our aim was to develop a method for a non-invasive measurement of the intracranial CSF-pressure (CSF-P) based upon MRI-assisted OSASW.

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