Full Digital Color Doppler Ultrasonic Diagnostic Instruments (Vet) User’s Manual V1.01
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8.5 PW Mode
Pulsed Wave Doppler (PW) is a Doppler mode that measures velocity in a PW sample volume and
displays that information in a spectral trace with audio output.
8.5.1 Entering the PW Mode
Steps for entering the PW mode are as follows:
1.
Select the appropriate probe and exam type, and optimize the B mode image.
2.
Press the
PW
key on the control panel to enter the PW mode, as shown in Figure 8-5.
Figure 8-5 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.
Rotate
Select
highlight the [Steer] menu item, press
Select
knob item to confirmation select [Steer]
item, and then rotate
Select
knob to adjust the sample volume.
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.
