Intraoperative anatomical and hemodynamic analysis of intracerebral arteriovenous malformations by semi-quantitative color-coded indocyanine green videoangiography

Abstract

Objective and Background:To evaluate possible roles for indocyanine green (ICG)-based FLOW 800 software in surgical treatment of cerebral arteriovenous malformations (AVMs).Methods:We perform ICG videoangiography several times for each step of AVM resection to elucidate feeders, drainers, and cerebral perfusion.Results:Since 2010, 22 AVM surgeries in our department have been conducted using FLOW 800 intraoperatively. We demonstrated ICG angiograms, color-coded images, and semi-quantitative curves for AVMs. By reviewing all these modalities, we would define vascular structure of the AVM, proceed with resection, and finally recheck for any remnant.Conclusions:ICG FLOW 800 software helps the surgeon to recognize feeding and draining vessels of an AVM intraoperatively. Further studies to evaluate semi-quantitative acquired data regarding blood flow and tissue perfusion are warranted.

In-House Handmade Camera for Indocyanine Green Video Angiography

“…ICG angiography is applicable in the operation rooms or laboratories [2]. Intraoperative ICG angiography has been reported to correlate well with the findings of intra-or post-operative conventional angiography [6].…”

“…Therefore, we believe that researchers in other developing countries with a wider access to electronic and optic resources may achieve higher quality images with few modifications in our proposed camera. Currently, we are using the camera in our laboratory to develop a blood flow analysis software comparable to those available in the market [2]. We are also working to create the first generation of real-time stereoscopic ICG angiographies (unpublished data).…”

“…Fluorescence techniques like ICG angiography are easily applicable, as they do not need moving the microscope out of the field and bringing the fluoroscopy in and have no radiation exposure. It helps surgeons with evaluating vascu-I lar anatomy, integrity of blood vessels, and physiologic parameters of blood flow [2].…”

Three-dimensional Anaglyph Indocyanine Green Video Angiography: A New Technology for Cerebrovascular Surgeries

“…Although intra-operative Indocyanine Green (ICG) Video Angiography (VA) has become an integral part of cerebrovascular surgeries [5,6], there is no microscope-mounted technology to display real-time ICG-VA or to capture them for later demonstrations in 3D anaglyph format. In this article, we present our recently invented camera which displays and records 3D anaglyph ICG-VA, describe its technical details, and discuss its applications.…”