The status bar shows the current function of the trackball.
5. Press the right or left trackball key [Set] to finish the measurement.
Remark: To select the Doppler measuring results, which should be displayed after an Auto
Trace measurement.
The determination of the envelope curve requires a clear and low-noise recording of the
Doppler spectrum. Otherwise the reliability of the displayed measurement results may not be
ensured!
11.1.4.1.2 Manual Trace
1.
To trace the Doppler spectrum manually and to display the results (according to the
“Auto Trace” setting in the Measure Setup), select the [Manual Trace] item in the menu
area. A cursor appears on the Doppler spectrum.
2. Move the cursor to the start point of the period and press the right or left trackball key
[Set] to fix the marker. Begin trace.
Note
To re-adjust the traced line, press the upper trackball key [Undo] repeatedly.
3. Trace to the end of the period and press the [Set] key again to fix the mark.
Remark: To select the Doppler measuring results, which should be displayed after the
measurement (= “Auto/Manual Trace”) and to select if the envelope curve will be performed
with a continuous trace line or by setting points (= “Manual Trace Mode”)
11.1.4.1.3 Velocity
1. To measure the velocity in Spectral-Doppler mode, select the [Vel] item in the menu
area. A horizontal line appears on the screen.
2. Move the line to the velocity point desired and press the right or left trackball key [Set].
11.1.4.1.4 Acceleration
1. To measure the accelerated velocity in Spectral-Doppler mode, select the [Accel] item in
the menu area. A cursor appears on the screen.
2. MMove the cursor to the start point of the measurement and press the right or left
trackball key [Set] to fix the marker. A second cursor appears.
3. Move this cursor to the second point of the measurement and press [Set] again.
Note
To re-adjust the start point, press the upper trackball key [Change] before completing the
measurement. This alternates the control from one cursor to the other.
11.1.4.1.5 RI (Resistivity Index)
1. To measure the resistivity index as well as the peak-systolic and end-diastolic velocity in
Spectral-Doppler mode, select the [RI] item in the menu area. A horizontal line appears
on the screen.
Measurements and Patient Worksheets (Reports)
11-18
Voluson® S6/S8 Basic User Manual
5433669-100 Revision 4
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