Calculations and Patient Reports
14.3.4.4 To perform Fetal Doppler Measurements
There are three methods of performing Fetal Doppler measurements in the Doppler spectrum:
• Auto Trace
(chapter 14.3.4.4.1)
• Manual Trace
(chapter 14.3.4.4.2)
• Measurement of Each Item
(chapter 14.3.4.4.3)
• To measure Fetal Heart Rate
(chapter 14.3.4.4.4)
14.3.4.4.1 Auto Trace
1. After obtaining a feasible Doppler spectrum, press the [Calc] key on the control panel.
The OB Calculations menu appears in the menu area.
2. Select the appropriate “Measure Group” and select [Auto Trace].
The Doppler spectrum is traced automatically and the results are
displayed.
3. Select the sensitivity of the envelope curve
(to eliminate artifacts).
4. Select the Trace Mode channel of the envelope
curve (upper, both or lower).
A green line appears at the left of the spectrum.
Press the upper trackball key [Change] to move the line and readjust
the start cycle (the line changes to yellow).Press the right or left
trackball key [Set] to fix the line.
A green line appears at the right of the spectrum. Press the [Change]
key again (line changes to yellow), move the line to readjust the end
cycle and fixate it with [Set].
The status area shows the current function of the trackball.
If you press the right or left trackball key [Store], the measurement results are
stored in the OB report.
Important note:
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!
Voluson
®
730Pro - Basic User Manual
14-14 105831 Rev. 0
To Next Page
Loading...
