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Indocyanine green videography has been introduced into neurosurgical fields for minimally invasive neurosurgery. To establish a new intraoperative imaging modality, we performed transdural indocyanine green videography during the surgery of meningiomas. A dose of 12.5 mg of indocyanine green was injected transvenously in two cases of meningiomas just before the dural opening. Transdural indocyanine green videography was monitored. The cortical arteries and veins and the venous sinus were identified by the indocyanine green videography transdurally in both cases. The projection of meningiomas was identified as the shadow and signal negative regions, and was visualized as "the Eclipse." Transdural observation of the cortical arteries and veins and the venous sinus was successfully performed followed by the visualization of the projection of meningiomas as the shadow. We propose this sign as "the Eclipse sign." This transdural imaging method was of value in terms of precise and minimal dural incision. Georg Thieme Verlag KG Stuttgart · New York.


Tetsuya Ueba, Hiroshi Abe, Toshio Higashi, Tooru Inoue. Transdural imaging of meningiomas by indocyanine green videography: the eclipse sign. Journal of neurological surgery. Part A, Central European neurosurgery. 2013 Jan;74(1):51-3

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PMID: 23027436

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