GE HEALTHCARE - KRETZTECHNIK VOLUSON® 730EXPERT (BT03)
D
IRECTION 105899, REVISION 3 DRAFT (APRIL 29, 2008) SERVICE MANUAL
4-22 Section 4-4 - Functional Checks
4-4-8 Basic Measurements (cont’d)
4-4-8-4 Velocity Measurements (Spectral Doppler Mode)
NOTE: The Spectral Doppler image is displayed based on time (X-axis) and velocity (Y-axis).
4-4-8-4-1 Acceleration Velocity and Velocity Ratio
1.) Press the CALIPER
key once.
2.) Select the appropriate item among D VELOCITY
or D A/B.
3.) Perform the measurement(s) using the TRACKBALL
and SET (right or left trackball key).
4-4-8-4-2 Average Velocity (Manual Trace)
1.) Press the CALIPER
key once.
2.) Touch D 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.
NOTE: Depending on the setting in the Measure Setup, the envelope curve will be performed with a continuous
trace line or by setting points.
4-4-8-4-3 Average Velocity (Auto Trace)
1.) Press the CALIPER
key once.
2.) Touch D AUTO TRACE
on the Touch Panel.
It traces the Spectral Doppler image automatically and displays the results.
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 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!
To Next Page
Loading...
