SAEVO EVUS 8, Руководство пользователя

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6 Acquiring Images
Basic User Manual 71
− Adjust the angle of the spectral Doppler line by moving the trackball left or right.
4. Rotate the Angle knob to increase or decrease the angle of the flow cursor.
5. Select the Update key to activate the CW mode.
The CW spectrum is displayed at the lower part of the screen after being activated, as shown in Figure 6-15.
0
5
50
-50
cm/s
X-axis: Time
Y-axis:
Frequency
S
Figure 6-15 CW-Mode Imaging Screen
−
X-axis is the time scale.
−
Y-axis is Doppler frequency scale, including positive and negative indicators.
Select the
Audio +
or
Audio -
key to adjust the audio volume.
NOTE:
Once the CW-mode is activated, you can move the trackball to stop the Doppler trace and adjust the
sample volume gate. The system continues tracing if the trackball is idle for more than 0.5s.
6. Optimize the CW-mode image. For details, refer to Section 6.5.3 Optimizing Spectral Doppler Images.
If needed, select the Update key on the control panel to enter the inactivated B+CW mode 2, the following
screen appears.