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Operation Manual
AFI (Amniotic Fluid Index)
Measure Amniotic Fluid Index. Measurements are performed by dividing the pregnant woman’s
abdomen into four parts. The distance between the fetus and the farthest point of each area
is measured. To obtain a specific image from each quadrant plane, press the Freeze button to go
to the diagnosis mode. After obtaining the image, press the Freeze button again to return to the
measurement mode.
Calculating Estimated Fetal Weight (EFW)
When measurements for the following items are complete, the system uses the results to calculate
the estimated fetal weight automatically. For an equation for calculating fetal weight, please refer to
‘Estimated Fetal Weight Formula’ in the Reference Manual Part 1.
X
BPD and AC
X
BPD, FL and FTA
X
BPD, APTD, TTD and FL
X
BPD, APTD, TTD and SL
X
BPD and TTD
X
AC and FL
X
BPD, AC and FL
X
HC, AC and FL
X
BPD,HC, AC and FL
X
AC
Continuous Measurement / Review for EFW Calculation
You can measure OB item (s) continuously for EFW calculation.
Tips!
Before starting measurement
1. Make sure that the User Key has been set for EFW continuous measurements. You can configure
the User Key for EFW continuous measurements at Setup > Peripherals > Customize Keys >
User Key > EFW Measure. For more information, refer to the ‘Peripheral Device Settings’ section
in ‘Chapter 3. Utilities’.
2. Check EFW Reference. If it is not set, or if you want to change it, select it at Setup > Measurement
> Author2 > EFW Equation.
NOTE: This function is not available in 3D Mode.
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