GE Voluson E8 - Page 163

GE HEALTHCAREDRAFT VOLUSON E8 / VOLUSON E6
D
IRECTION KTD102576, REVISION 7 DRAFT (AUGUST 23, 2012) SERVICE MANUAL
Chapter 4 - Functional Checks 4-27
4-4-8 Generic Measurements (cont’d)
4-4-8-4 Measurements in Spectral Doppler Mode
NOTE: The Spectral Doppler image is displayed based on time (X-axis) and velocity (Y-axis).
4-4-8-4-1 Auto Trace
1.) Press the CALIPER
key.
2.) Touch AUTO TRACE
on the Touch Panel. It traces the Spectral Doppler image automatically
and displays the results (according to the Measure Setup).
3.) Select the SENSITIVITY
of the envelope curve (to eliminate artifacts).
4.) Select the TRACE MODE
channel of the envelope curve (upper, both, lower).
5.) If necessary, select the Angle and the Baseline.
6.) Press the right or left trackball key SET
to finish the measurement.
Before you complete the measurement:
- To readjust the start cycle (vertical yellow line), press CHANGE
(upper trackball key).
Press SET
(right or left trackball key) to fix the line.
- Press the CHANGE
key again to readjust the end cycle (vertical green line).
Press SET
to fix the line.
NOTE: The determination of the envelope curve requires a clear and low-noise record of the Doppler
spectrum. Otherwise the reliability of the displayed measurement results may not be ensured!
4-4-8-4-2 Manual Trace
1.) Press the CALIPER
key.
2.) Touch MANUAL TRACE
on the Touch Panel. A cursor appears on the screen.
3.) Move the cursor with the TRACKBALL
to the start point of the measurement and press SET
(right or left trackball key) to fix the marker.
4.) Trace to the end of the period and press the SET
key again to fix the mark.
The measurement results appear on the screen.
Before you complete the measurement:
To readjust the traced line, press UNDO
(upper trackball key) repeatedly.
4-4-8-4-3 Heart Rate
1.) Press the CALIPER
key.
2.) Touch HR
on the Touch Panel. A line appears on the screen.
3.) Move the line with the TRACKBALL
to the start point of the period and press SET (right or left
trackball key). A second line appears.
4.) Move the second line to the end point of the period.
5.) Select the number of “HR cycles” for the measurement with the digipot below the Touch Panel.
6.) Press the SET
(right or left trackball key) again to fix the line. The Heart Rate is displayed.
NOTE: For further measurements and other details refer to the Voluson E8 / Voluson E6 Basic User Manual.