Use of T2-weighted magnetic resonance imaging of the optic nerve sheath to detect raised intracranial pressure |
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Authors: | Thomas Geeraerts Virginia FJ Newcombe Jonathan P Coles Maria Giulia Abate Iain E Perkes Peter JA Hutchinson Jo G Outtrim Dot A Chatfield David K Menon |
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Affiliation: | University Division of Anaesthesia and Wolfson Brain Imaging Center, University of Cambridge, Addenbrooke's Hospital, Hills Road, Cambridge, CB2 2QQ, UK. thgeeraerts@hotmail.com |
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Abstract: |
Introduction The dural sheath surrounding the optic nerve communicates with the subarachnoid space, and distends when intracranial pressure is elevated. Magnetic resonance imaging (MRI) is often performed in patients at risk for raised intracranial pressure (ICP) and can be used to measure precisely the diameter of optic nerve and its sheath. The objective of this study was to assess the relationship between optic nerve sheath diameter (ONSD), as measured using MRI, and ICP. |
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