GE LOGIQ 500 Advanced Reference Manual page 52

Realtime Doppler Calculations
Display Modes
Doppler Trace Indicators
4–6
Enter the Doppler Realtime Calc mode by selecting Realtime
Trace = Calc from the PWD soft menu.
Ensure Realtime Trace = On in the measurement menu.
The Auto Trace display is available only in :
Display Format = Single D Format, Single B/D Format
Scan Mode = PD, B/PD, BCFM/PD or CWD Mode
Sweep Speed = Slow, Mid, Fast
Exit the Doppler Realtime Calc mode by turning Trace Auto
OFF in a measurement menu or selecting Realtime Trace = Off
in the PWD soft menu.
Each time end diastole is detected in the Realtime Doppler
Trace, a white or colored vertical line is placed on the display.
This indicates the area before and after the heart rate that is
used to calculate the displayed measurements/calculations.
Gray markers are used to indicate areas that are past or
beyond the current displayed calculations. This area can be
accessed after pressing Freeze and using the Cine function. If
end diastole cannot be detected, no markers are displayed.
LOGIQ 500 Advanced Reference Manual
2276614–100 Rev. 0