Optimization of novel exoscopic blue light filter during fluorescence-guided resection of Glioblastoma.
J Neurooncol
; 161(3): 617-623, 2023 Feb.
Article
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| MEDLINE
| ID: mdl-36745272
ABSTRACT
PURPOSE:
Operative guidelines and use optimization for new surgical exoscopes are not well described in the literature. In this study, we evaluated use of the ORBEYE (Olympus) surgical exoscope system during 5-ALA fluorescence-guided resection of GBMs to optimize workflow and exoscope settings.METHODS:
The ORBEYE exoscope system was fitted with a blue light filter for 5-ALA mediated fluorescence-guided surgery (FGS). Intraoperative images were obtained during 5-ALA FGS in 9 patients with primary or recurrent GBM. The exoscope was set up at constant, increasing focal distances from the target tissue, and light source intensity varied. High-resolution 4 K images were captured and analyzed. Comparisons of fluorescence to background were then generated for use optimization.RESULTS:
Light intensity did not significantly influence tumor fluorescence (P = 0.878). However, focal distance significantly impacted relative fluorescent intensity (P = 0.007). Maximum average fluorescence was seen consistently at a focal length of 220 mm and a light intensity of approximately 75% maximum. Decreasing focal distance from 400 mm to 220 mm significantly increased visualized fluorescence (P = 0.0038).CONCLUSIONS:
The ORBEYE surgical exoscope system with blue light filter is a powerful imaging tool for 5-ALA FGS in GBM. The ORBEYE blue filter performs optimally at shorter focal distance with moderate light intensity. Similar to microscope systems, decreasing focal distance significantly influences visualized fluorescence.Palabras clave
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Base de datos:
MEDLINE
Asunto principal:
Neoplasias Encefálicas
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Glioblastoma
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Cirugía Asistida por Computador
Idioma:
En
Revista:
J Neurooncol
Año:
2023
Tipo del documento:
Article