Reported cutoff values of the optic nerve sheath diameter (ONSD) for the diagnosis of elevated intracranial pressure (ICP) are inconsistent. This hampers ONSD as a possible noninvasive bedside monitoring tool for ICP. Because the influence of methodological differences on variations in cutoff values is unknown, we performed a narrative review to identify discrepancies in ONSD assessment methodologies and to investigate their effect on reported ONSD values.

中文翻译：

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通过神经超声学评估视神经鞘直径：方法学差异的回顾

用于诊断颅内压升高 (ICP) 的视神经鞘直径 (ONSD) 的报告临界值不一致。这阻碍了 ONSD 作为可能的 ICP 无创床边监测工具。由于方法学差异对临界值变化的影响未知，我们进行了叙述性审查，以确定 ONSD 评估方法的差异并调查它们对报告的 ONSD 值的影响。