GE HealthCare CONFIDENTIAL
Direction 5936427, Rev. 1 LOGIQ Totus Basic Service Manual
6 - 6 Section 6-2 - Monitor Adjustments
6-2-4 Advanced monitor adjustments
Review Gamma Setting
Gamma settings can be adjusted in two ways, with or without DICOM Gray Scale Standard Display
Function (GSDF) enabled. GSDF-compliant with all contrast settings, but not all brightness settings.
Because of differences in display technology, the HDU Display or LCD Monitor is GSDF-compliant with
all contrast settings, but not compliant with all brightness settings.
To enable the GSDF mode:
1.) Navigate to Utilities > System > System Display.
2.) Select Enable DICOM grayscale display mode (GSDF).
3.) Set Use Wide Screen for… > Single Image to Off.
4.) Navigate to Utility (second page) > Scan Screen. The scan screen displays on the main display
while the Utility Touch Panel is active so you can the affect your adjustments are making to the
monitor.
5.) With GSDF enabled, the Gamma button on the touch panel affects the image, emulating the
appearance of that gamma, but does not affect the monitor.
If a site’s PACS workstations are calibrated to the GSDF, this setting may help to make the image
appearance more uniform between the Ultrasound system and PACS.
• With GSDF disabled, the monitor still uses a gamma curve that may be selected on the Touch Panel
(for backwards compatibility with sites that are happy with their PACS or may have a mix of older
systems).
• With GSDF enabled, the gamma button on the touch panel affects the image, emulating the
appearance of that gamma, but does not affect the monitor.
Figure 6-4 Check to Enable GSDF Mode
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