
4-22
Operation Manual
NOTE:
HPRF is not activated in Simultaneous Mode. It is also not activated if [PRF*2] exceeds 23KHz.
CAUTION:
▶
The Phantom Gate position can be located outside the 2D image area in Zoom Mode.
▶
Make sure that sample volume and Phantom Gate are not placed together in the measuring area. If
more than two Sample Volumes are located in the vessels, all Doppler components will appear in the
spectrum, causing noise.
PW Spectral Doppler Mode Soft Menu
■
SV Size / Angle
▶
SV Size
Set the size of the Sample Volume. Select a size between 0.5 and 15 by rotating the Soft Menu
dial-button [2].
▶
Angle
If you press the Soft Menu dial-button [2], the angle changes – 60, 0 or 60 degrees. The speed can
be measured accurately by adjusting the angle of the Sample Volume.
■
Auto Calc
Press the Soft Menu dial-button [3] to turn it on or o.
If it is turned on, Doppler Trace is performed and the resulting values are displayed. When it is on, the
Mean Trace button is activated. The displayed values are as below. For information on setting display
values, please refer to "Chapter 3. Settings.”
▶
Peak Systolic Velocity (PSV)
▶
Time Averaged Mean Velocity (TAM)
▶
End Diastolic Velocity (EDV)
▶
Diastole / Systole Ratio (D/S)
▶
Time Averaged Peak Velocity (TAP)
▶
Max Pressure Gradient (PGmax)
▶
Resistive Index (RI)
▶
Mean Pressure Gradient (PGmean)
▶
Pulsatility Index (PI)
▶
Velocity Time Integral (VTI)
▶
Systole / Diastole Ratio (S/D)
▶
PeakA
CAUTION:
The measurements done by Auto Trace under Measure and Real Time Automatic Doppler
Trace (Automatic Calculator) may be different from each other. This is because the algorithms for these
two methods are different. It is recommended to use Auto Trace under Measure for more accurate
measurement.
I want to learn how to do angle correction on PW Doppler on my machine.
How do I assess PW angle cursor?
I don't want to join the group.