Measurement and Analysis
Vivid S5/Vivid S6 User Manual 329
R2424458-100 Rev. 2
• To fix the start point, press SET.
The system fixes the first caliper and displays a second
active caliper.
• To position the second active caliper at the end point,
move the Trackball.
A dotted line connects the measurement points.
• To complete the measurement, press
SET.
The system displays the distance value in the Results
Window.
3. When the measurement of the first quadrant is completed,
unfreeze and move to the second quadrant.
4. After you obtain the image, press
FREEZE and then
MEASURE.
The system prompts you to continue with the AFI
measurements. Make sure that the next quadrant has
been selected.
5. Perform a standard distance measurement for the second,
third, and fourth quadrants (see step 2 above).
6. When all four quadrants have been measured, the system
calculates the AFI total and displays it in the Results
Window.
Note: If the fluid in a pocket is zero, set the second caliper on
top of the first one to give it a zero value.
Figure 7-44: Amniotic Fluid Index
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