
Chapter 5 Measurements and Calculations
5-29
Calculating Estimated Fetal Weight (EFW)
Estimated fetal weight is calculated automatically when the following items are measured. For information
on formulae used for EFW calculation, see ‘Estimated Fetal Weight Formula’ in the Reference Manual – Part 1.
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BPD and AC
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BPD and FL, FTA
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BPD and APTD, TTD, FL
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BPD and APTD, TTD, SL
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BPD and TTD
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AC and FL
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BPD and AC, FL
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HC and AC, FL
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BPD and HC, AC, FL
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AC
NOTE: For reference, the Osaka University / Tokyo University methods are mainly used in Asia, the
Merz method in Europe, and the Shepard / Hadlock methods in the Americas.
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