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User Manual
Manual Trace
A spectrum is traced manually. This can be enabled in the measurement menu in Spectral
Doppler Mode.
1. Select Manual Trace in the measurement menu. The measurement cursor will appear over
the spectrum.
2. Trace the spectrum.
3. When the Trace is complete, the measurement results are displayed on the screen.
Measurement by Item
In the Measurement menu, select an individual item and take a measurement.
1. Press the Calculator button on the control panel after obtaining a desired image.
2. Select the item you want from the Measurement menu. The + cursor will appear over the
spectral waveform.
3. Position the “+” cursor and press the Set button.
4. The measurement results for the selected item are displayed on the screen.
Item Category Unit Formula
PSV (Peak Systolic Velocity) Velocity cm/s
ED (End Diastolic Velocity) Velocity cm/s
MD (Minimum Diastole Velocity) Velocity cm/s
PI (Pulsatility Index) Calculation Ratio (PS-ED)/TAMAX
RI (Resistivity Index) Calculation Ratio (PS-ED)/PS or (PS-MD)/PS
PS/ED (Ratio of PS to ED) Calculation Ratio PS/ED
ED/PS (Ratio of ED to PS) Calculation Ratio ED/PS
TAMAX (Time Average Max Velocity) Velocity cm/s
TAMEAN (Time Average Mean
Velocity)
Velocity cm/s
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