User's Manual

Acclarix LX3 Series Diagnostic Ultrasound System User Manual Imaging
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5.4 CW Mode
5.4.1. Using CW Mode
CW mode is only available on phased array transducer.
1. Perform the image scanning to get a good image in B mode or B+Color(DPI/DPDI) mode;
2. Press <CW> on the console to display sample line;
3. Use the trackball, <Angle> knob and other controls to adjust the position of the sample line and
the size and angle of the sample gate;
4. Press <Update> on the console to enter B+CW or B+Color(PDI/DPDI)+CW mode and display
Doppler strip.
5. Adjust image parameters to optimize the Doppler strip.
6. When spectrum is displayed, pressing <Update> toggles between acquiring the Doppler strip and
acquiring the reference image.
In CW mode, pressing on <PW> on the console will switch PW mode directly.
5.4.2. CW Image Optimization
The following touch controls can be used to optimize the CW image.
Name Control Description
Scale
Scale adjusts the range of velocities that are displayed.
Upward presses increase scale and downward presses
decrease it.
Baseline
The Baseline control adjusts the Doppler baseline. Upward
presses move the baseline up on the screen and
downward presses move the baseline down.
Image Type
Strip Doppler supports image presets for Low Flow,
Medium Flow, and High Flow.
Invert
Normally, signals above the baseline are positive velocities
(moving toward the transducer). However, when Invert is
pressed then negative velocities are above the baseline.
Invert does not affect the baseline position.
Quick-Angle
Adjusts the angle correct quickly to one of 60/0/-60.