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J Neurol Surg A Cent Eur Neurosurg 2013; 74(01): 051-053
DOI: 10.1055/s-0032-1325634
Case Report
Georg Thieme Verlag KG Stuttgart · New York

Transdural Imaging of Meningiomas by Indocyanine Green Videography: The Eclipse Sign

Tetsuya Ueba
1   Department of Neurosurgery, Faculty of Medicine, Fukuoka University, Fukuoka, Japan
,
Hiroshi Abe
1   Department of Neurosurgery, Faculty of Medicine, Fukuoka University, Fukuoka, Japan
,
Toshio Higashi
1   Department of Neurosurgery, Faculty of Medicine, Fukuoka University, Fukuoka, Japan
,
Tooru Inoue
1   Department of Neurosurgery, Faculty of Medicine, Fukuoka University, Fukuoka, Japan
› Author Affiliations
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Publication History

05 July 2011

02 April 2012

Publication Date:
01 October 2012 (online)

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Abstract

Background 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.

Method 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.

Results 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.”

Conclusion 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.

Keywords

meningioma - transdural indocyanine green videography - the Eclipse sign - brain tumor - minimally invasive neurosurgery
 

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