EDAN DUS 60 User Manual page 47

DUS 60 Digital Ultrasonic Diagnostic Imaging System User Manual
Chapter 7 Obstetric Measurements and Calculations
The obstetric examination is usually in the B mode and the PW mode.
7.1. Obstetric Measurements and Calculations in B Mode
To enter B mode obstetric examination:
1. Press Exam and select Obstetric, and then press Set.
2. Press to enter B mode.
3. Press Measure to activate the measurement function. The system displays the measurement
menu as shown in figure 7-1.
Items of Measurement and Calculation:
B-OB MEAS: GS, CRL, BPD, HC, AC, FL, EFW, and AFI.
B-OB MEAS 2: TAD, APAD, CER, FTA, HUM, OFD, THD and FBP.
Figure 7-1 Obstetric Measurement and Calculation Menu in B mode
Items of input: LMP and BBT
Fetus growth is usually measurement by the following parameters.
Abbreviations:
EDC: Estimated Date of Confinement
MA: Menstrual Age
LMP: Last Menstrual Period
BBT: Basal Body Temperature
Obstetric Measurements and Calculations
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DUS 60 Digital Ultrasonic Diagnostic Imaging System User Manual
EFW: Estimated Fetal Weight
B-OB MEAS: the default measurement is distance measurement.
Label Description Channel
GS Gestational Sac Diameter 1
CRL Crown Rump Length 1
BPD Biparietal Diameter 1
HC Head Circumference 1
AC Abdominal Circumference 1
FL Femur Length 1
AFI Amniotic Fluid Index 1
EFW Estimated Fetal Weight 1
Table 7-1 Obstetric Measurements 1 in B Mode
B-OB MEAS 2: the default measurement is TAD measurement.
Label Description Channel
Transverse Abdominal
TAD 1
Diameter
Antero Posterior Diameter
APAD 1
of the Abdomen
CER Cerebellum Diameter 1
Fetus Trunk cross section
FTA 1
Area
HUM Humerus Length 1
OFD Occipital Frontal Diameter 1
THD Thorax Diameter 1
FBP Fetal Biophysical Profile 1
Table 7-2 Obstetric Measurements 2 in B Mode
Obstetric Measurements and Calculations
Method Results display
Distance (mm)
Ellipse or Trace
Circumference (mm)
The measurement
Distance (mm)
results will
Calculating AFI
displayed in the result
requires 4 sets of
window.
distance measurement
data, AF1, AF2, AF3,
and AF4.
According to the
selected formula,
described as follows.
(g or kg)
Method Results display
Distance (mm)
The measurement
Ellipse or Trace Area results will
2 2
(mm or dm displayed in the result
)
window.
Distance (mm)
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be
be