4 Setup
Operator’s Manual 4 - 9
• Measurement value, Standard deviation (-), GA value, Standard deviation (+): enter the
number of days without the unit.
User-defined OB Items
The calculation results of the user-defined OB formula are used for reference rather than clinical
diagnosis.
You can add user-defined formula for items (obstetric tools) that are not included in the GA and FG
table.
1. Select [More OB Items] on the [Fetal Gestational Age] or [Fetal Growth] page.
2. Select an item and click [OK].
The new item appears in the left column and the system asks if to add a formula.
3. Click [OK] to select the *.csv file (formula file) for the item. Or add a formula for the new item
by clicking [Import].
Measure Result
EDD Display: the EDD is displayed in the result window after checking.
GA Cycle For EDD
• Normal Cycle: GA is calculated according to 40 weeks after checking (EDD=LMP+287(40
weeks)).
• French Cycle: GA is calculated according to 41 weeks after checking (EDD=LMP+287(41
weeks)).
Display EFW GA in Report
Estimate GA according to EFW data after checking.
Reference Value/Range
You can select whether to display obstetrics reference value or range of certain measurement items
in the measurement result window and report page, so as to acquire diagnosis reference. The
reference value or range changes with the growing of GA.
The options are as follows:
Item Description
Show Reference
Val ue/R ange
To select whether to display the reference value or range of all measurement
items.
Meas Item Obstetrics measurement item.
Value/Range Type To select whether to display the reference value or range of a specific
measurement items in the drop-down list.
• Off: Cancels display of reference value or range.
• MOM (Multiple of Median): indicates the multiple of the measured value
against the median (of the same GA in the statistical data column).
• P (Percentage): it is a statistical term that indicates the position of the
current value in the statistical data.
• SD (Standard Deviation): it is a statistical term. Values between -SD to SD
or -2SD to 2SD are normal.
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