FujiFilm SonoSite M-Turbo User Manual page 83

Calculation Gestational OB
Result Measurements
Estimated Fetal HC, AC, FL
Weight (EFW) c
BPD, AC, FL
AC, FL
BPD, TTD
BPD, FTA, FL
BPD, AC
BPD, TTD, APTD, FL
Ratios HC/AC
FL/AC
FL/BPD
FL/HC
Amniotic Fluid Q 1 , Q 2 , Q
Index
Growth Analysis BPD
Tables d
HC
AC
FL
EFW
HC/AC
a. The Gestational Age is automatically calculated and displayed
next to the OB measurement you selected. The average of the
results is the AUA.
b. For Tokyo U., APTD and TTD are used only to calculate EFW. No
age or growth tables are associated with these
measurements.
c. The Estimated Fetal Weight calculation uses an equation that
consists of one or more fetal biometry measurements. The
Table
Authors
Hadlock 1
Hadlock 2
Hadlock 3
Hansmann
Osaka U.
Shepard
Tokyo U.
Campbell
Hadlock
Hohler
Hadlock
3 , Q 4 Jeng
Chitty,
Hadlock,
Jeanty
Chitty,
Hadlock,
Jeanty
Chitty,
Hadlock,
Jeanty
Chitty,
Hadlock,
Jeanty
Brenner,
Hadlock,
Jeanty
Campbell
author for the OB tables, which you choose on a system setup
page, determines the measurements you must perform to
obtain an EFW calculation. (See
page 20.)
Individual selections for Hadlock's EFW equations 1, 2, and 3
are not determined by the user. The selected equation is
determined by the measurements that have been saved to
the patient report with priority given to the order listed
above.
d. The Growth Analysis tables are used by the Report Graphs
feature. Three growth curves are drawn using the table data
for the selected growth parameter and published author.
Growth tables are only available with a user-entered LMP or
Estab. DD.
To measure gestational growth (2D)
For each 2D OB measurement (except AFI), the
system saves up to three individual
measurements and their average. If you take
more than three measurements, the earliest
measurement is deleted.
1 In the patient information form, select OB
exam type, and select LMP or Estab.DD. Select
Twins if appropriate.
2 On a frozen 2D image, press the
3 Do the following for each measurement you
want to take:
a From the calculations menu, select the
measurement name. For twins, select
Twin A or Twin B, and then select the
measurement name.
The caliper tool may change depending on
the measurement selected, but the position
remains constant.
Position the calipers. (See "Working with
b
calipers" on page 47.)
c Save the calculation. (See "To save a
calculation" on page 51.)
To measure fetal heart rate (M Mode)
1 On a frozen M Mode trace, press the
key.
2 Select FHR from the calculations menu.
A vertical caliper appears.
Chapter 4: Measurements and Calculations
"OB Calculations setup" on
key.
CALCS
CALCS
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