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Modify the GLOW800 settings
6.3
BrightCare
Due to technical reasons, in case of high magnifications at low
working distances the fluorescence intensity suffers. The limitation
of excitation intensity by BrightCare for GLOW800 can be switched
off for better excitation and fluorescence intensity.
CAUTION
Danger of injury to the patient due to excessive GLOW800
radiation
GLOW800 mode is disabled automatically after 180 seconds.
However, extended and/or excessively frequent use of
GLOW800 damages the patient's skin and tissue.
Avoid excessive exposure of the patient to GLOW800
X
radiation.
Deactivate BrightCare for GLOW800 (1) in the GLOW800 tab of
X
the "Fluorescence Settings".
If not saved, BrightCare for GLOW800 remains deactivated in
the surgeon profile only until the end of the session.
For more information about the BrightCare function, refer
to the user manual of ARveo 8.
Fluorescence visibility
The GLOW800 function optimizes automatically the fluorescence
visibility to receive the best possible image for a broad working
range of microscope parameters and ICG dosage.
However, these parameters still have an impact to the fluorescence
visibility as the following description explains for further
optimizations.
16
1
GLOW800 / Ref. 10 748 652 / Version 01
Illumination × Dosage
FL Visibility =
2
Mag
× WD
FL Visibility:
Fluorescence brightness/perceptibility on the
screen
Illumination:
Microscope Excitation intensity
Dosage:
Injected ICG amount in mg/kg
Mag.:
Magnification
WD:
Working Distance
The ICG Dosage is the anesthetist's and/or surgeon's
decision.
• Less excitation intensity "Excitation" and/or a lower ICG dosage
reduces the fluorescence visibility, especially at high
magnification and/or long working distance. Less fluorescence
visibility or fluorescence brightness might be observed already
at a lower magnification and WDs.
• Higher excitation intensity "Excitation" and/or a higher ICG
dosage increases the fluorescence visibility, especially at high
magnification and/or long working distance and can
compensate the reduction of these two optical parameters.
The fluorescence visibility can decrease even with standard
conditions if the efficiency of the illumination system is
reduced or the Xenon bulb lifetime reaches its end.
There is a default limitation to the WD and Mag when using
the GLOW800 mode. If the WD and Mag are above this limit
before switching to GLOW800 mode, the WD and Mag will
be reduced upon switching to GLOW800 mode and the
picture will get out of focus.
In order to bring the picture back into focus, reposition the
microscope (meeting the WD limitation value or getting
closer than the WD limitation value).
Contact Leica service to adjust WD and Mag limitations.
6.4
Pseudocolor selection
Navigate to the "Surgeon Settings" page (see chapter 6 "Modify
X
the GLOW800 settings", page 12).
Tap the "AR Settings" icon.
X
The "AR Settings" page opens:
The pseudocolor can be defined for the monitor view through
the "AR Settings" page.
2
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