U60 Diagnostic Ultrasound System User Manual Obstetric Measurements and Calculations
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Chapter 8 Obstetric Measurements and Calculations
The obstetric examination is usually performed in the B mode, PW mode, and M mode.
8.1. Obstetric Measurements and Calculations in B Mode
To enter B mode obstetric examination:
1. Press Transducer, select the desired probe model and the exam mode Obstetric-1/3,
Obstetric-2/3, or Fetal Cardiac, and then press OK, or double click on the exam type.
2. Press B to enter B mode.
3. Press Measure to activate the application measurement function. The system displays the
measurement menu, as shown in Figure 8-1.
Items of Measurement and Calculation:
B-OB MEAS: GS, CRL, NT, BPD, HC, AC, FL, AFI, EFW, TAD, APAD, HUM, CER, FTA,
OFD, THD and FBP.
Figure 8-1 Obstetric Measurement and Calculation Menu in B mode
Items of input: BBT
Fetus growth is usually measured by the following parameters.
Abbreviations:
EDC: Estimated Date of Confinement
MA: Menstrual Age
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