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Figure 6-9 PW Mode Image
The Spectral Doppler line and the sample volume gate are used to locate the qualitative analysis
on the image.
The flow cursor needs to be adjusted parallel to the flow when measuring the velocity.
X-axis: Indicates the time.
Y-axis: Indicates Doppler frequency scale, including a positive and negative indicator.
3.
Adjust the position and angle of the spectral Doppler line.
Move the trackball to adjust the position of the spectral Doppler line.
Press
“
Steer-
”
or
“
Steer+
”
key corresponding to [Steer] to adjust the angle of the spectral Doppler line.
4.
Adjust the sample volume and flow cursor.
Move cursor to [SV] menu item and press Set key to adjust the sample volume.
Rotate Select knob to highlight the [SV] menu item, press Select knob item to confirmation select
[SV] item, and then Rotate Select knob to adjust the sample volume.
Rotate the Angle knob on the control panel to adjust the direction of the flow cursor.
5.
Optimize the PW mode image. For details, refer to Section 6.5.2 Optimizing the PW Mode Image.
Press the Save IP key to save the parameter settings in the PW mode as the default settings.
Press ↑ or ↓ key on the keyboard to adjust the Doppler sound.
6.
Press the PW key again to exit the PW mode.
6.5.2 Optimizing the PW Mode Image
Methods for optimizing the PW mode image are as follows.
Select the PW mode parameter on the menu at the top left of the screen by using the trackball,
press
the Set key to adjust it. Press the Menu key to display/hide this menu.