EDAN DUS 60 User Manual page 41

DUS 60 Digital Ultrasonic Diagnostic Imaging System User Manual
4. Roll the trackball and press Set to begin a new velocity measurement. You
can measure a maximum of four groups of data. The outcome will be
displayed in the measurement result window, as shown below.
5. Press Measure to finish and exit.
Acceleration To measure velocities of two points on the Doppler wave, and calculate the
acceleration:
Acceleration = (Vel1－Vel2) / Interval
1. Press Measure to activate a measurement cursor "+".
2. Roll the trackball to highlight Acceleration and press Set and a "+" is
displayed.
3. Roll the trackball and press Set to anchor the first point, measuring Vel1.
4. Roll the trackball and press Set to anchor the second point, measuring Vel2
and Interval, and calculating Acceleration.
5. Roll the trackball and press Set to begin a new acceleration measurement.
You can measure a maximum of four groups of data. The outcome will be
displayed in the measurement result window, as shown below.
6. Press Measure to finish and exit.
RI To measure velocities of two peak points on the Doppler wave, and calculate RI
and S/D:
(Resistance
Index) RI = (Vel1－Vel2)/Vel1
1. Press Measure to activate a measurement cursor "+".
2. Roll the trackball to highlight RI and press Set and a "+" is displayed.
3. Roll the trackball and press Set to anchor the first peak point, measuring Vel1.
4. Roll the trackball and press Set to anchor the second peak point, measuring
Vel2, calculating RI.
5. Roll the trackball and press Set to begin a new RI measurement. You can
measure a maximum of four groups of data. The outcome will be displayed in
the measurement result window.
6. Press Measure to finish and exit.
D Trace The trace in PW mode is shown below:
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Operation DUS 60 Digital Ultrasonic Diagnostic Imaging System User Manual
Figure 6-19 Trace Diagram
Where,
VPS is the maximum velocity in the cycle;
VED is the minimum velocity in the cycle;
V is the minimum absolute value.
min
NOTE:
1. The trace function is effective above the baseline only.
2. Freeze the system before performing the tracing function.
To perform D Trace function (manual tracing)
1. Press Measure to activate a measurement cursor "+".
2. Roll the trackball to highlight D Trace and press Set.
3. Select Manual and a "+" is displayed.
4. Roll the trackball and press Set to anchor the start point.
5. Roll the trackball to trace along the Doppler wave forward, or press Back to
erase the trace backward.
6. Press Set to anchor the end point, the system displays the results of PS, ED,
RI, etc. in measurement result window.
7. Roll the trackball and press Set to begin a new tracing measurement. You can
measure a maximum of four groups of data. The outcome will be displayed in
the measurement result window.
8. Press Measure to finish and exit.
To perform D Trace function (automatic tracing)
1. Press Measure to activate a measurement cursor "+".
2. Roll the trackball to highlight D Trace and press Set.
3. Select Auto and a big "+" is displayed.
4. Roll the trackball and press Set to anchor the start point.
5. Roll the trackball press Set to anchor the end point, the system displays the
results of PS, ED, RI, etc. in measurement result window.
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Operation