GE Vivid T8 Basic Service Manual page 174

General Procedures and Functional Checks
Adjust the Color M Mode controls
NOTE:
NOTE:
NOTE:
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• Adjust the Active mode gain to set the gain in the color flow
area.
Adjust Scale to the highest setting that provides adequate
flow detection.
The scale value may affect FPS, Low Velocity Reject, and
Sample Volume.
Adjust Low Velocity Reject to remove low velocity blood
flow and tissue movement that reduces image quality.
Adjust Variance to detect flow disturbances.
Adjust Sample volume (SV) to a low setting for better flow
resolution, or a higher setting to more easily locate disturbed
flows
Adjust Frequency to optimize the color flow display. Higher
settings improve resolution. Lower settings improve depth
penetration and sensitivity. This does not affect the
frequency used for 2D and M-Mode.
NOTE: Frequency setting may affect FPS, SV and Low
Velocity Reject.
Adjust Power to obtain an acceptable image using the
lowest setting possible.
The Power setting affects all other operating modes.
Adjust the following settings to further optimize display of the
image:
• Use Invert to reverse the color assignments in the color flow
area of the display.
Use Tissue priority to emphasize either the color flow
overlay, or the underlying grey scale tissue detail.
Use Baseline to emphasize flow either toward or away from
the probe.
Use Radial and Lateral Averaging to reduce noise in the
color flow area. Radial and Lateral Averaging smooths the
image by averaging collected data along the same
horizontal line. An increase of the lateral averaging will
reduce noise, but this will also reduce the lateral resolution.
Vivid T8/ Vivid T8 Pro – Basic Service Manual
5490863-100 English Rev. 03