Acclarix LX9 Series Diagnostic Ultrasound System User Manual
3. Move the caliper to the desired location.
4. Press the <Set> key to place the first point.
5. Repeat step 3~4 to place other points. A trace will be created after three points are placed.
6. If a point is not placed satisfactorily, press Undo button to remove it. Each press of Undo
button removes one point.
7. Double press the <Set> key to complete the trace.
Auto Trace Method:
1. Freeze the strip and invoke the generic measurement function.
2. Select Generic-> Auto Trace.
3. The trace waveform(s) automatically appear, and measurement result displays.
NOTE:
1. Auto trace measurement can only be activated on a frozen Doppler strip.
2. Live Auto Trace is available as a separate feature on the Doppler touch screen. To activate
Auto Trace in real time mode, press Auto Trace button on PW touch screen.
8.1.3.3. Time
The steps of time measurement are the same as those of time measurement in M mode. Please refer
to section 8.1.2.3 for details.
8.1.3.4. HR
The steps of HR measurement are the same as those of HR measurement in M mode. Please refer to
section 8.1.2.4 for details.
8.1.3.5. PI(Pulse Index)
PI measurement can be measured with manual trace method. To measure PI:
1. Freeze the strip and invoke the generic measurement function .
2. Select Generic-> PI.
3. Move the caliper to the start point.
4. Press the <Set> key to fix the start point and start drawing the trace.
5. Moving the caliper to mark the trace outline.
Presses of the <Update> key will toggle between active calipers, allowing you to adjust the
positions of the PS or ED points in the trace.
6. Press the<Set> key to complete the trace..
8.1.3.6. PG(Pressure Gradient)
PGmax and PGmean can be measured in Cardiac exams. The measurement method is manual trace.
Please refer to the steps of manual trace method in section 8.1.3.2 trace measurement for details.
8.1.3.7. Tei Index
The Tei index measurement is useful for the assessment of ventricular systolic and diastolic function.
Higher Tei index indicates decreased ventricular function.
To use the TEI measurement:
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