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Chapter 8 Measurements and Calculations
Measurement Menu Item Mode Method Unit
Ductus Venosus
S Vmax PW Velocity measurement cm/s
D Vmax PW Velocity measurement cm/s
A Vmax PW Velocity measurement cm/s
Auto Trace PW Doppler Spectrum trace
Limited Trace PW Doppler Spectrum trace
Manual Trace PW Doppler Spectrum trace
PS PW Velocity measurement cm/s
ED PW Velocity measurement cm/s
MD PW Velocity measurement cm/s
PI PW Velocity measurement –
RI PW Velocity measurement –
S/D PW Continuous measurement –
Fetal HR PW Heart Rate bpm
Automatic Calculation
Some items in the measurement menu are automatically calculated based on measurements of
other items.
NOTE: For reference, the Osaka University/Tokyo University methods are mainly used in Asia, the
Merz method in Europe, and the Shepard/ Hadlock methods on the American continent.
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