
Operation Manual
4-26
X Peak Systolic Velocity (PSV) X Time Averaged Mean Velocity (TAM)
X End Diastolic Velocity (EDV) X Diastole / Systole Ratio (D/S)
X Time Averaged Peak Velocity (TAP) X Max Pressure Gradient (PGmax)
X Resistive Index (RI) X Mean Pressure Gradient (PGmean)
X Pulsatility Index (PI) X Velocity Time Integral (VTI)
X Systole / Diastole Ratio (S/D) X PeakA
CAUTION: The measurement value from Auto Calc and the measurement value from ‘Auto Trace’ in
Measurement Mode may not be identical. This is because they use different operation algorithms.
For more accurate measurement, we recommend using ‘Auto Trace’ in Measurement Mode.
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Baseline
Use the dial-button to adjust the baseline for Doppler spectrum.
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Mean Trace
NOTE: Mean Trace appears on the menu only when Auto Calc is turned on.
Press the dial-button to turn it on or o. When on, the mean value of the item calculated by Auto
Calc is traced in black.
■
Loop Size
Resize the PW Spectral Doppler image for the 2D image. Select a value between 30 and 70 with the
dial-button.
■
Loop Format
Set the screen layout for PW Spectral Doppler and 2D images by pressing the dial-button. Select
Top/Bottom to display the 2D image at the top or Side By Side to display the 2D image on the right-
hand side.
■
Dynamic Range
Adjust contrast by changing the ratio of minimum/maximum input signal values. Select a value
between 50 and 170 with the dial-button. Increasing the ratio makes the image softer.
■
Doppler Average
Press the dial-button to turn it on or o. When on, the expression of the spectral Doppler image is
enhanced.
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