6 Acquiring Images
Basic User Manual 89
s
cm/s
50
-50
0
5
10
15
PW spectrum
Y axis: frequency
X axis: time
Figure 6-8 PW-Mode Imaging Screen
−
X-axis is the time scale.
−
Y-axis is Doppler frequency scale, including positive and negative indicators.
Press the Shift and left/right arrow keys to adjust the audio volume.
Or, rotate the function key corresponding to Volume to adjust the audio volume.
NOTE:
Once the PW 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.
7. Optimize the PW-mode image. For details, refer to Section 6.4.2 Optimizing Spectral
Doppler Images.
If needed, press the Update key on the control panel to enter the inactivated B+PW
mode 2, the following screen appears.
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