To measure distance stenosis:
1. Press Measure to activate measurement function.
2. Roll the trackball to highlight % Stenosis, and select Distance, and
then press Set to activate a measurement cursor on the screen.
3. Measure the first distance with the distance measurement method.
4. Measure the second distance, move the cursor and press Set to anchor
the start point, and the mark “+” appears. Move the cursor with
trackball, Measurement Results displays the real time measurement
value and calculation result.
5. During measurement, you can press Change to change the start point
and the end point; if you press Change again, the system interchanges
the numerator and denominator.
6. Roll the trackball and press Set to complete the measurement, and the
calculation result will be displayed in the measurement result window.
7. Roll the trackball and press Set to begin a new stenosis 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.
Figure 6-10 Distance Stenosis Measurement and the Results
Area stenosis
To determine the area stenosis, take two area measurements: A and B. The
system calculates the stenosis: (A-B)/A * 100%.
To measure area stenosis:
To Next Page
Loading...