2. Move the line to the peak of the systole and press the right or left trackball key [Set]. A
second line appears.
3.
Move the second line to the end of the diastole and press [Set] again.
11.1.4.1.6 PI (Pulsatility Index)
1. To measure the pulsatility index, the time averaged maximum velocity as well as the
peak-systolic and end-diastolic velocity in Spectral-Doppler mode, select the [PI] item on
the menu area. A cursor appears on the screen.
2. Move the cursor to the beginning of the waveform (Vmax) 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 waveform (Vd) and press the [Set] key again to fix the mark.
11.1.4.1.7 PS/ED (Peak Systole/End Diastole Ratio)
1. To calculate the Peak Systole/End Diastole ratio in Spectral-Doppler mode, select the
[PS/ED] item on the menu area. A horizontal line appears on the screen.
2. Move the line to the peak of the systole and press the right or left trackball key [Set]. A
second line appears.
3. Move the second line to the end of the diastole and press [Set] again.
11.1.4.1.8 Time
The measurement procedure of the time in Spectal-Doppler mode is the same than the
measurement in M mode. review: Time
(chapter
'M-Mode Measurements'
on page 11-14
)
.
11.1.4.1.9 HR (Heart Rate)
The measurement procedure is the same than the measurement in M mode. review: HR
(Heart Rate)
(chapter
'M-Mode Measurements'
on page 11-14
)
.
Measurements and Patient Worksheets (Reports)
Voluson® S6/S8 Basic User Manual
5433669-100 Revision 4 11-19
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