FujiFilm SonoSite Edge II User Manual page 104

Table 5-2: Results from System-Defined OB Measurements and Table Authors (continued)
Calculation Result
Ratios
Amniotic Fluid Index
Growth Analysis
d
Tables
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 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
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 CALCS key.
98
Gestational OB Measurements
HC/AC
FL/AC
FL/BPD
FL/HC
1 2 3 4
Q , Q , Q , Q
BPD
HC
AC
FL
EFW
HC/AC
Table Authors
Campbell
Hadlock
Hohler
Hadlock
Jeng
Chitty, Hadlock, Jeanty
Chitty, Hadlock, Jeanty
Chitty, Hadlock, Jeanty
Chitty, Hadlock, Jeanty
Brenner,
Hadlock, Jeanty
Campbell
"OB Calculations setup" on page 30.
Exam-based calculations